Edukron Project Library
SupportAWSOn-Demand Delivery Operations

Food Delivery Order Platform Live Operations

Live operations for restaurant availability, menu, cart, payment, courier matching, tracking, delivery, and refund services.

50-step support flow for Food Delivery Order Platform Live Operations

View plan contents

Follow the phases in order. Each step explains why the work is required, how it applies to this project, who owns it, what to do, which tools fit, what evidence to retain, and the gate that must pass before continuing.

Project operating context

On-demand food delivery
Service promise

Protect order completion and delivery accuracy during meal peaks while containing regional, partner, and release failures.

Critical service journey
  1. 01select an available restaurant and menu
  2. 02price and authorize the order
  3. 03transmit and accept the order at the restaurant
  4. 04assign and route a courier
  5. 05complete delivery and customer notification
  6. 06settle payment, refund, and partner balances
People and teams
  • customers
  • restaurant operators
  • couriers and dispatch teams
  • payments, customer-care, and live-operations teams
Protected assets
  • order state and promised delivery time
  • restaurant availability and menu data
  • courier location and assignment state
  • payment, refund, and settlement records
Critical dependencies
  • mapping, traffic, and geolocation providers
  • restaurant devices and partner APIs
  • payment, messaging, and notification services
  • event streams, order databases, and dispatch optimization
Primary risks
  • the customer, restaurant, and courier see different order states
  • duplicate events trigger double preparation, assignment, or payment
  • regional demand exhausts dispatch or notification capacity
  • a partial migration loses in-flight orders or courier updates
Mandatory controls
  • event idempotency and ordered state transitions
  • regional traffic isolation and queue back-pressure
  • live order reconciliation and exception ownership
  • journey-based canary, rollback, and cutover checks
Success signals
  • order acceptance and completion rate
  • dispatch and estimated-arrival accuracy
  • event lag and in-flight order consistency
  • refund and partner-settlement completion

Full project notes

6 note sections

Food Delivery Order Platform Live Operations is treated as a complete on-demand food delivery service rather than a collection of isolated cloud resources. These notes explain the business journey, architecture, delivery or operating model, assurance controls, production signals, recovery behavior, and evidence required to manage the project from initiation through handover.

Execution-plan basisA complete support lifecycle for live-service ownership: onboarding, observability, daily operations, incident command, layered diagnosis, safe restoration, permanent correction, and reliability improvement. Validate the operational gates and evidence against the actual support model.

01

Business scope and service outcome

Live operations for restaurant availability, menu, cart, payment, courier matching, tracking, delivery, and refund services. The governing objective is to protect order completion and delivery accuracy during meal peaks while containing regional, partner, and release failures. Scope decisions must therefore be tested against the complete journey from “select an available restaurant and menu” to “settle payment, refund, and partner balances”, not only against successful infrastructure deployment.

The service serves customers, restaurant operators, couriers and dispatch teams, payments, customer-care, and live-operations teams. Ownership must remain clear at every handoff because a technically healthy component can still leave the business journey incomplete, inconsistent, inaccessible, or outside its required operating window.

  • Business outcome measures: order acceptance and completion rate, dispatch and estimated-arrival accuracy, event lag and in-flight order consistency, refund and partner-settlement completion.
  • Protected service assets: order state and promised delivery time, restaurant availability and menu data, courier location and assignment state, payment, refund, and settlement records.
  • Accountable participant groups: customers, restaurant operators, couriers and dispatch teams, payments, customer-care, and live-operations teams.
02

Architecture and dependency notes

The AWS solution must carry each request, event, file, job, or operator action across mapping, traffic, and geolocation providers, restaurant devices and partner APIs, payment, messaging, and notification services, event streams, order databases, and dispatch optimization. Those dependencies require explicit identities, routes, timeouts, retry behavior, health signals, owners, escalation paths, capacity assumptions, and safe failure modes.

The working technology set is AWS EKS, DynamoDB, Amazon MSK, CloudWatch, OpenTelemetry, Grafana, PagerDuty, ServiceNow. Every technology is included for a defined service responsibility and must have version ownership, configuration source, security baseline, monitoring coverage, backup or recreation method, and an upgrade path. Unmanaged manual configuration is treated as drift and converted into reviewed automation or a governed runbook step.

  • Journey stage 1: select an available restaurant and menu.
  • Journey stage 2: price and authorize the order.
  • Journey stage 3: transmit and accept the order at the restaurant.
  • Journey stage 4: assign and route a courier.
  • Journey stage 5: complete delivery and customer notification.
  • Journey stage 6: settle payment, refund, and partner balances.
03

Live-service operating and incident model

Support begins with an agreed service boundary, SLOs, dependency map, recovery objectives, support tiers, access model, and runbook catalogue. Daily operations review service health, jobs, backups, certificates, capacity, security exposure, risky changes, and unresolved incidents before planned work proceeds.

When degradation occurs, one incident record carries impact, severity, ownership, timeline, recent-change context, technical hypotheses, stakeholder updates, mitigation, and validation. Responders diagnose from the user journey inward, make the smallest reversible intervention, and close only after business behavior, data integrity, telemetry, and sustained health are confirmed.

  • Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys.
  • Correlated regional demand, partner, map, queue, database, and release signals.
  • Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations.
  • Managed peak-event command and customer-impact communication.
04

Security, risk, and assurance notes

The primary project risks are the customer, restaurant, and courier see different order states; duplicate events trigger double preparation, assignment, or payment; regional demand exhausts dispatch or notification capacity; a partial migration loses in-flight orders or courier updates. They are converted into preventive, detective, and recovery controls rather than left as narrative concerns in a risk register. Each control has an owner, automated or procedural implementation, test method, evidence location, exception path, and review date.

Mandatory assurance includes event idempotency and ordered state transitions; regional traffic isolation and queue back-pressure; live order reconciliation and exception ownership; journey-based canary, rollback, and cutover checks. Identity and secrets follow least privilege; data is protected in transit and at rest; changes remain traceable to reviewed source; security and quality findings are resolved or formally accepted before the corresponding gate can pass.

  • Control: event idempotency and ordered state transitions.
  • Control: regional traffic isolation and queue back-pressure.
  • Control: live order reconciliation and exception ownership.
  • Control: journey-based canary, rollback, and cutover checks.
05

Observability and operational notes

Monitoring joins infrastructure health with application behavior, dependency state, security events, logs, traces, scheduled work, and the business journey. Dashboards and alerts are segmented by environment, region, tenant, cohort, and deployed version where those dimensions affect diagnosis or impact.

The key service indicators are order acceptance and completion rate, dispatch and estimated-arrival accuracy, event lag and in-flight order consistency, refund and partner-settlement completion. Every alert must name the affected service, likely impact, current value, threshold, responder, runbook, escalation path, and recovery condition. Synthetic checks exercise the real service path so that a green host or cluster cannot hide a failed business transaction.

  • Operational signal: order acceptance and completion rate.
  • Operational signal: dispatch and estimated-arrival accuracy.
  • Operational signal: event lag and in-flight order consistency.
  • Operational signal: refund and partner-settlement completion.
06

Recovery, handover, and continuous improvement

Recovery is designed around the complete service: application version, infrastructure, configuration, secrets and certificates, data, identity, networking, dependencies, observability, and accountable operators. Restore and failover exercises measure both recovery time and data position, then validate the critical journey before business recovery is declared.

Handover includes architecture, repository and release ownership, access, dashboards, alert routes, support schedules, runbooks, backup and recovery evidence, known risks, vendor contacts, cost ownership, and improvement backlog. Incidents, failed changes, capacity trends, security findings, and user feedback become funded corrective work with owners and measurable closure evidence.

  • Target outcome: Improved response to meal-peak saturation.
  • Target outcome: Reduced time to isolate partner and regional failures.
  • Target outcome: Connected recovery validation to completed and financially correct orders.

Full flow diagram library

5 project-level flows

Use these diagrams with the critical-service journey, phase maps, and the execution diagram inside every step. Together they show how business work, platform components, delivery controls, evidence, recovery, and continuous improvement connect.

01

End-to-end business service flow

The customer, operator, data, and system journey that the technical project exists to protect.

  1. 01Stage 1Select an available restaurant and menu; observe order acceptance and completion rate.
  2. 02Stage 2Price and authorize the order; observe dispatch and estimated-arrival accuracy.
  3. 03Stage 3Transmit and accept the order at the restaurant; observe event lag and in-flight order consistency.
  4. 04Stage 4Assign and route a courier; observe refund and partner-settlement completion.
  5. 05Stage 5Complete delivery and customer notification; observe order acceptance and completion rate.
  6. 06Stage 6Settle payment, refund, and partner balances; observe dispatch and estimated-arrival accuracy.
02

Architecture and dependency flow

A logical view of how the AWS platform connects users, delivery tooling, service logic, protected data, dependencies, and operations.

  1. 01People and systemscustomers and restaurant operators
  2. 02Identity and entrymapping, traffic, and geolocation providers
  3. 03AWS platformAWS EKS, DynamoDB, Amazon MSK
  4. 04Project capabilityOn-Demand Delivery Operations: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys
  5. 05Protected stateorder state and promised delivery time and restaurant availability and menu data
  6. 06Connected servicesrestaurant devices and partner APIs, payment, messaging, and notification services, event streams, order databases, and dispatch optimization
  7. 07Operational feedbackorder acceptance and completion rate and dispatch and estimated-arrival accuracy
03

Support lifecycle control flow

The ordered governance path used to control this support project from entry criteria to measurable service outcome.

  1. 01OnboardScope, service map, targets, access, escalation, and runbooks
  2. 02ObserveMetrics, logs, traces, events, journeys, alerts, and paging
  3. 03DetectTelemetry, user, security, vendor, or business event intake
  4. 04CommandImpact, severity, roles, timeline, and communication cadence
  5. 05DiagnoseChange, application, runtime, network, identity, data, and partner layers
  6. 06RestoreSmallest reversible mitigation and end-to-end validation
  7. 07CorrectRoot cause, tested permanent fix, and improved detection
  8. 08StrengthenRecovery, lifecycle, capacity, cost, and support maturity
04

Risk, control, evidence, and gate flow

Every material risk is connected to a control, implementation, retained evidence, accountable decision, and live success signal.

  1. 01Identify riskthe customer, restaurant, and courier see different order states
  2. 02Select controlevent idempotency and ordered state transitions
  3. 03ImplementAWS EKS, DynamoDB, Amazon MSK, CloudWatch
  4. 04Retain evidenceVersion, operator, timestamps, test output, approval, and before-and-after state
  5. 05Pass the gateThe accountable owner accepts measured evidence or stops the flow
  6. 06Monitor outcomeorder acceptance and completion rate
  7. 07Feed improvementImproved response to meal-peak saturation.
05

Failure detection and service recovery loop

The closed loop used to detect degradation, localize the fault, restore the complete service, and prevent recurrence.

  1. 01Detect deviationorder acceptance and completion rate and dispatch and estimated-arrival accuracy
  2. 02Establish impactcustomers, restaurant operators, and the affected journey stage
  3. 03Correlate evidencemapping, traffic, and geolocation providers, restaurant devices and partner APIs, payment, messaging, and notification services, event streams, order databases, and dispatch optimization
  4. 04Contain safelyregional traffic isolation and queue back-pressure
  5. 05Restore serviceRecover order state and promised delivery time and restaurant availability and menu data
  6. 06Validate journeyselect an available restaurant and menu through settle payment, refund, and partner balances
  7. 07Learn and improveConnected recovery validation to completed and financially correct orders. Correct the detection and prevention gap.
50ordered steps
8execution phases
50quality gates

Onboard the service

8 steps

Establish scope, architecture, service targets, ownership, access, escalation, and trusted operating knowledge before accepting support.

01
Confirm service scope and ownershipOwner: Service owner and support manager
Purpose

Define exactly which applications, environments, integrations, hours, users, and responsibilities are inside the support boundary.

Project application

Confirm service scope and ownership is where the team must accept live-service ownership with complete boundaries and knowledge. The team traces the change through “select an available restaurant and menu”, including its reliance on payment, messaging, and notification services and its effect on restaurant availability and menu data. Existing project evidence establishes the delivery context: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with restaurant devices and partner APIs
  2. 02Confirm service scope and ownershipMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceSigned service scope, RACI and contact register using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionEvery supported component and excluded dependency has an accountable owner and escalation contact. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Signed service scope, RACI and contact register, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Signed service scope
  • RACI and contact register
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

Every supported component and excluded dependency has an accountable owner and escalation contact.

02
Register the service and configuration itemsOwner: Service management and platform operations
Purpose

Create a reliable service catalogue and configuration baseline linking business service, infrastructure, software, data, vendors, and support groups.

Project application

At this point, register the service and configuration items must accept live-service ownership with complete boundaries and knowledge. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The implementation anchor comes from the project’s recorded scope: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with payment, messaging, and notification services
  2. 02Register the service and configuration itemsMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceService catalogue entry, CMDB or asset baseline using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionThe incident team can identify the affected service and current configuration without relying on personal knowledge. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Service catalogue entry, CMDB or asset baseline, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Service catalogue entry
  • CMDB or asset baseline
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

The incident team can identify the affected service and current configuration without relying on personal knowledge.

03
Map architecture and dependenciesOwner: Application architect and SRE
Purpose

Document request paths, runtimes, databases, queues, storage, identity, DNS, certificates, networks, cloud services, and third parties.

Project application

The practical purpose of map architecture and dependencies is to accept live-service ownership with complete boundaries and knowledge. The implementation follows “transmit and accept the order at the restaurant” across mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The relevant project scope is concrete: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with event streams, order databases, and dispatch optimization
  2. 02Map architecture and dependenciesMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceCurrent architecture diagram, Dependency and critical-path map using Grafana, PagerDuty, ServiceNow
  5. 05Exit decisionEvery critical user journey identifies its upstream, downstream, ownership, timeout, and failure behavior. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Grafana, PagerDuty, ServiceNow, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Current architecture diagram, Dependency and critical-path map, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Current architecture diagram
  • Dependency and critical-path map
Applicable tools
GrafanaPagerDutyServiceNowAWS
Exit gate

Every critical user journey identifies its upstream, downstream, ownership, timeout, and failure behavior.

04
Define SLA, SLO, and service indicatorsOwner: Business owner, service owner, and SRE
Purpose

Convert availability and performance expectations into measurable indicators, objectives, exclusions, error budgets, and reporting rules.

Project application

This step turns define SLA, SLO, and service indicators into a controlled decision: accept live-service ownership with complete boundaries and knowledge. The team traces the change through “assign and route a courier”, including its reliance on restaurant devices and partner APIs and its effect on order state and promised delivery time. Existing project evidence establishes the delivery context: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerAssign and route a courier with mapping, traffic, and geolocation providers
  2. 02Define SLA, SLO, and service indicatorsMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceApproved SLA/SLO document, SLI query definitions using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionTargets can be calculated from trusted telemetry and have an agreed breach and escalation process. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Approved SLA/SLO document, SLI query definitions, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Approved SLA/SLO document
  • SLI query definitions
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

Targets can be calculated from trusted telemetry and have an agreed breach and escalation process.

05
Confirm recovery objectivesOwner: Business continuity, data owner, and service owner
Purpose

Agree recovery time, recovery point, maximum tolerable outage, data-loss tolerance, and restoration priority for each service tier.

Project application

Confirm recovery objectives is where the team must accept live-service ownership with complete boundaries and knowledge. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The implementation anchor comes from the project’s recorded scope: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with restaurant devices and partner APIs
  2. 02Confirm recovery objectivesMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceRTO/RPO matrix, Recovery dependency sequence using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionRecovery targets are approved, technically achievable, and connected to tested backup or failover mechanisms. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record RTO/RPO matrix, Recovery dependency sequence, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • RTO/RPO matrix
  • Recovery dependency sequence
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

Recovery targets are approved, technically achievable, and connected to tested backup or failover mechanisms.

06
Design support tiers and escalationOwner: Support manager and resolver-group leads
Purpose

Define L1 intake, L2 diagnosis, L3 engineering, vendor escalation, severity rules, response targets, and management escalation.

Project application

At this point, design support tiers and escalation must accept live-service ownership with complete boundaries and knowledge. The implementation follows “settle payment, refund, and partner balances” across event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The relevant project scope is concrete: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with payment, messaging, and notification services
  2. 02Design support tiers and escalationMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceTier responsibility matrix, Escalation tree and rota using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionA responder can route every known fault domain without searching for an unrecorded contact. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Tier responsibility matrix, Escalation tree and rota, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Tier responsibility matrix
  • Escalation tree and rota
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

A responder can route every known fault domain without searching for an unrecorded contact.

07
Provision least-privilege support accessOwner: Identity, security, and platform owners
Purpose

Grant read, diagnostic, deployment, data, secret, and emergency permissions according to support role and environment.

Project application

The practical purpose of provision least-privilege support access is to accept live-service ownership with complete boundaries and knowledge. The team traces the change through “select an available restaurant and menu”, including its reliance on mapping, traffic, and geolocation providers and its effect on payment, refund, and settlement records. Existing project evidence establishes the delivery context: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with event streams, order databases, and dispatch optimization
  2. 02Provision least-privilege support accessMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceSupport RBAC matrix, Access test and approval record using OpenTelemetry, Grafana, PagerDuty
  5. 05Exit decisionOn-call staff can perform approved diagnostics while privileged changes remain time-bound, logged, and separately authorized. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use OpenTelemetry, Grafana, PagerDuty, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Support RBAC matrix, Access test and approval record, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Support RBAC matrix
  • Access test and approval record
Applicable tools
OpenTelemetryGrafanaPagerDutyAWS
Exit gate

On-call staff can perform approved diagnostics while privileged changes remain time-bound, logged, and separately authorized.

08
Complete knowledge transfer and runbooksOwner: Delivery team, application owner, and support lead
Purpose

Transfer architecture, release, common failure, validation, rollback, backup, vendor, and troubleshooting knowledge into owned runbooks.

Project application

This step turns complete knowledge transfer and runbooks into a controlled decision: accept live-service ownership with complete boundaries and knowledge. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The implementation anchor comes from the project’s recorded scope: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with mapping, traffic, and geolocation providers
  2. 02Complete knowledge transfer and runbooksMap components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceRunbook catalogue, Recorded walkthrough and competency sign-off using OpenTelemetry, Grafana, PagerDuty
  5. 05Exit decisionA support engineer unfamiliar with the build can diagnose a simulated failure using only approved documentation. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use OpenTelemetry, Grafana, PagerDuty, AWS to map components, critical journeys, targets, recovery objectives, access, support tiers, vendors, and escalation routes. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Runbook catalogue, Recorded walkthrough and competency sign-off, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Runbook catalogue
  • Recorded walkthrough and competency sign-off
Applicable tools
OpenTelemetryGrafanaPagerDutyAWS
Exit gate

A support engineer unfamiliar with the build can diagnose a simulated failure using only approved documentation.

Make health visible

8 steps

Instrument infrastructure, applications, dependencies, logs, business journeys, alerts, and paging so failures are detected early and routed correctly.

09
Define monitoring requirementsOwner: SRE, application, infrastructure, and business owners
Purpose

List the infrastructure, application, dependency, security, batch, data, and business conditions that must be detected.

Project application

Define monitoring requirements is where the team must detect degradation before it becomes a widespread user report. The implementation follows “transmit and accept the order at the restaurant” across payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The relevant project scope is concrete: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with restaurant devices and partner APIs
  2. 02Define monitoring requirementsInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceMonitoring requirement matrix, Coverage-to-risk mapping using Amazon MSK, CloudWatch, OpenTelemetry
  5. 05Exit decisionEvery critical failure mode has a signal, threshold, owner, response, and validation method. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Amazon MSK, CloudWatch, OpenTelemetry, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Monitoring requirement matrix, Coverage-to-risk mapping, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Monitoring requirement matrix
  • Coverage-to-risk mapping
Applicable tools
Amazon MSKCloudWatchOpenTelemetryAWS
Exit gate

Every critical failure mode has a signal, threshold, owner, response, and validation method.

10
Onboard metrics, logs, traces, and eventsOwner: Observability engineering and application teams
Purpose

Collect correlated telemetry with environment, service, instance, version, severity, and trace context plus suitable retention and access.

Project application

At this point, onboard metrics, logs, traces, and events must detect degradation before it becomes a widespread user report. The team traces the change through “assign and route a courier”, including its reliance on event streams, order databases, and dispatch optimization and its effect on courier location and assignment state. Existing project evidence establishes the delivery context: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerAssign and route a courier with payment, messaging, and notification services
  2. 02Onboard metrics, logs, traces, and eventsInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceTelemetry source inventory, Data arrival and correlation tests using Grafana, PagerDuty, ServiceNow
  5. 05Exit decisionA synthetic request can be followed from entry to dependency and the deployed version is visible. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Grafana, PagerDuty, ServiceNow, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Telemetry source inventory, Data arrival and correlation tests, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Telemetry source inventory
  • Data arrival and correlation tests
Applicable tools
GrafanaPagerDutyServiceNowAWS
Exit gate

A synthetic request can be followed from entry to dependency and the deployed version is visible.

11
Build infrastructure health dashboardsOwner: Cloud and platform operations
Purpose

Expose availability, CPU, memory, storage, network, quotas, saturation, scaling, host or node health, and platform events.

Project application

The practical purpose of build infrastructure health dashboards is to detect degradation before it becomes a widespread user report. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The implementation anchor comes from the project’s recorded scope: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with event streams, order databases, and dispatch optimization
  2. 02Build infrastructure health dashboardsInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceInfrastructure dashboard, Capacity baseline and thresholds using Amazon MSK, CloudWatch, OpenTelemetry
  5. 05Exit decisionThe dashboard distinguishes healthy load, saturation, resource exhaustion, and platform failure. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Amazon MSK, CloudWatch, OpenTelemetry, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Infrastructure dashboard, Capacity baseline and thresholds, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Infrastructure dashboard
  • Capacity baseline and thresholds
Applicable tools
Amazon MSKCloudWatchOpenTelemetryAWS
Exit gate

The dashboard distinguishes healthy load, saturation, resource exhaustion, and platform failure.

12
Build application and business dashboardsOwner: Application owner, SRE, and product analytics
Purpose

Display rate, latency, errors, exceptions, dependencies, jobs, queues, user journeys, and the business transaction the service exists to complete.

Project application

This step turns build application and business dashboards into a controlled decision: detect degradation before it becomes a widespread user report. The implementation follows “settle payment, refund, and partner balances” across restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The relevant project scope is concrete: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with mapping, traffic, and geolocation providers
  2. 02Build application and business dashboardsInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceApplication golden-signal dashboard, Business KPI and journey dashboard using Grafana, PagerDuty, ServiceNow
  5. 05Exit decisionA technically available but functionally broken transaction becomes visible within the agreed detection time. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Grafana, PagerDuty, ServiceNow, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Application golden-signal dashboard, Business KPI and journey dashboard, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Application golden-signal dashboard
  • Business KPI and journey dashboard
Applicable tools
GrafanaPagerDutyServiceNowAWS
Exit gate

A technically available but functionally broken transaction becomes visible within the agreed detection time.

13
Centralize and protect operational logsOwner: Application, security, and observability teams
Purpose

Normalize searchable logs, redact protected values, synchronize time, enforce retention, and control access to sensitive diagnostic data.

Project application

Centralize and protect operational logs is where the team must detect degradation before it becomes a widespread user report. The team traces the change through “select an available restaurant and menu”, including its reliance on payment, messaging, and notification services and its effect on restaurant availability and menu data. Existing project evidence establishes the delivery context: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with restaurant devices and partner APIs
  2. 02Centralize and protect operational logsInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceLogging standard and redaction test, Search, retention, and access validation using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionResponders can reconstruct an event without exposing credentials or protected customer payloads. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Logging standard and redaction test, Search, retention, and access validation, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Logging standard and redaction test
  • Search, retention, and access validation
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

Responders can reconstruct an event without exposing credentials or protected customer payloads.

14
Create an actionable alert catalogueOwner: SRE and service owner
Purpose

Define sustained thresholds, symptom versus cause, deduplication, severity, responder, runbook, suppression, and recovery behavior for each alert.

Project application

At this point, create an actionable alert catalogue must detect degradation before it becomes a widespread user report. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The implementation anchor comes from the project’s recorded scope: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with payment, messaging, and notification services
  2. 02Create an actionable alert catalogueInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceAlert catalogue, Alert-to-runbook mapping using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionEvery enabled alert is actionable, owned, tested, and justified by user or service risk. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Alert catalogue, Alert-to-runbook mapping, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Alert catalogue
  • Alert-to-runbook mapping
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

Every enabled alert is actionable, owned, tested, and justified by user or service risk.

15
Test routing, paging, and escalationOwner: Operations and service management
Purpose

Send test events through monitoring, integration, paging, acknowledgement, secondary escalation, ITSM, and communication channels.

Project application

The practical purpose of test routing, paging, and escalation is to detect degradation before it becomes a widespread user report. The implementation follows “transmit and accept the order at the restaurant” across mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The relevant project scope is concrete: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with event streams, order databases, and dispatch optimization
  2. 02Test routing, paging, and escalationInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceEnd-to-end alert test, Acknowledgement and escalation timestamps using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionThe correct primary and backup responders receive context-rich events within target time. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record End-to-end alert test, Acknowledgement and escalation timestamps, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • End-to-end alert test
  • Acknowledgement and escalation timestamps
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

The correct primary and backup responders receive context-rich events within target time.

16
Control maintenance suppression and alert noiseOwner: SRE and change management
Purpose

Prevent planned work from flooding responders while keeping unrelated risk visible and reviewing duplicate, stale, and low-value alerts.

Project application

This step turns control maintenance suppression and alert noise into a controlled decision: detect degradation before it becomes a widespread user report. The team traces the change through “assign and route a courier”, including its reliance on restaurant devices and partner APIs and its effect on order state and promised delivery time. Existing project evidence establishes the delivery context: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerAssign and route a courier with mapping, traffic, and geolocation providers
  2. 02Control maintenance suppression and alert noiseInstrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceMaintenance-window rules, Noise and false-positive review using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionSuppression is scoped, time-bound, auditable, automatically removed, and never masks critical independent symptoms. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to instrument the service path and connect meaningful thresholds to dashboards, alerts, paging, runbooks, and business impact. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Maintenance-window rules, Noise and false-positive review, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Maintenance-window rules
  • Noise and false-positive review
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

Suppression is scoped, time-bound, auditable, automatically removed, and never masks critical independent symptoms.

Run daily operations

4 steps

Use repeatable health, capacity, backup, certificate, security, pipeline, batch, and handover controls to prevent avoidable incidents.

17
Perform the daily service health reviewOwner: On-duty operations engineer
Purpose

Review availability, active alerts, error trends, resource saturation, service health, open incidents, and overnight changes before planned work.

Project application

Perform the daily service health review is where the team must remove predictable service risk before it becomes an incident. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The implementation anchor comes from the project’s recorded scope: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with restaurant devices and partner APIs
  2. 02Perform the daily service health reviewReview health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceDaily health checklist, Prioritized risk and action log using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionEvery abnormal condition is accepted, investigated, ticketed, or escalated with an owner and deadline. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to review health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Daily health checklist, Prioritized risk and action log, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Daily health checklist
  • Prioritized risk and action log
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

Every abnormal condition is accepted, investigated, ticketed, or escalated with an owner and deadline.

18
Review failed jobs, pipelines, and scheduled tasksOwner: DevOps and application operations
Purpose

Identify failed deployment pipelines, backups, data jobs, integrations, schedulers, automation, and recurring batch workloads.

Project application

At this point, review failed jobs, pipelines, and scheduled tasks must remove predictable service risk before it becomes an incident. The implementation follows “settle payment, refund, and partner balances” across event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The relevant project scope is concrete: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with payment, messaging, and notification services
  2. 02Review failed jobs, pipelines, and scheduled tasksReview health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceFailure review report, Retry or corrective-action record using PagerDuty, ServiceNow, AWS EKS
  5. 05Exit decisionNo failed automated process remains silent or repeatedly retried without cause, impact, and safe recovery. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use PagerDuty, ServiceNow, AWS EKS, AWS to review health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Failure review report, Retry or corrective-action record, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Failure review report
  • Retry or corrective-action record
Applicable tools
PagerDutyServiceNowAWS EKSAWS
Exit gate

No failed automated process remains silent or repeatedly retried without cause, impact, and safe recovery.

19
Check backup, certificate, capacity, and security riskOwner: Service owner, SRE/operations, and the accountable specialist
Purpose

Inspect backup freshness, restore readiness, certificate expiry, quota and growth forecasts, vulnerability findings, access anomalies, and critical advisories.

Project application

The practical purpose of check backup, certificate, capacity, and security risk is to remove predictable service risk before it becomes an incident. The team traces the change through “select an available restaurant and menu”, including its reliance on mapping, traffic, and geolocation providers and its effect on payment, refund, and settlement records. Existing project evidence establishes the delivery context: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with event streams, order databases, and dispatch optimization
  2. 02Check backup, certificate, capacity, and security riskReview health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceLifecycle risk dashboard, Owned remediation queue using Amazon MSK, CloudWatch, OpenTelemetry
  5. 05Exit decisionApproaching expiry, capacity exhaustion, backup failure, or critical security exposure is acted on before user impact. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Amazon MSK, CloudWatch, OpenTelemetry, AWS to review health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Lifecycle risk dashboard, Owned remediation queue, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Lifecycle risk dashboard
  • Owned remediation queue
Applicable tools
Amazon MSKCloudWatchOpenTelemetryAWS
Exit gate

Approaching expiry, capacity exhaustion, backup failure, or critical security exposure is acted on before user impact.

20
Complete shift handoverOwner: Outgoing and incoming on-call engineers
Purpose

Transfer current health, active incidents, risky changes, disabled alerts, pending vendor work, temporary mitigations, and next decisions.

Project application

This step turns complete shift handover into a controlled decision: remove predictable service risk before it becomes an incident. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The implementation anchor comes from the project’s recorded scope: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with mapping, traffic, and geolocation providers
  2. 02Complete shift handoverReview health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceTimestamped handover note, Incoming engineer acknowledgement using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionThe incoming responder can state current risk, ownership, deadlines, and escalation without rediscovery. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to review health, jobs, backups, certificates, security, capacity, risky changes, and open actions at an accountable cadence. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Timestamped handover note, Incoming engineer acknowledgement, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Timestamped handover note
  • Incoming engineer acknowledgement
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

The incoming responder can state current risk, ownership, deadlines, and escalation without rediscovery.

Command the incident

5 steps

Create an accountable incident structure, determine impact and severity, preserve a timeline, and coordinate technical and stakeholder work.

21
Detect or receive the service eventOwner: Monitoring platform, service desk, or on-call responder
Purpose

Recognize telemetry, business, security, customer, or vendor evidence that the service may be degraded.

Project application

Detect or receive the service event is where the team must create one factual view of impact, ownership, and time. The implementation follows “transmit and accept the order at the restaurant” across payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The relevant project scope is concrete: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with restaurant devices and partner APIs
  2. 02Detect or receive the service eventEstablish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceOriginal alert or report, Detection timestamp and source using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionThe event is acknowledged, correlated with existing incidents, and assigned for impact validation. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to establish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Original alert or report, Detection timestamp and source, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Original alert or report
  • Detection timestamp and source
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

The event is acknowledged, correlated with existing incidents, and assigned for impact validation.

22
Create the incident recordOwner: Service desk or incident responder
Purpose

Record affected service, environment, start time, reporter, symptoms, version, change context, initial evidence, and responsible resolver group.

Project application

At this point, create the incident record must create one factual view of impact, ownership, and time. The team traces the change through “assign and route a courier”, including its reliance on event streams, order databases, and dispatch optimization and its effect on courier location and assignment state. Existing project evidence establishes the delivery context: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerAssign and route a courier with payment, messaging, and notification services
  2. 02Create the incident recordEstablish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceITSM incident, Initial evidence links using PagerDuty, ServiceNow, AWS EKS
  5. 05Exit decisionThe record contains enough context for a new responder to begin work without repeating intake. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use PagerDuty, ServiceNow, AWS EKS, AWS to establish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record ITSM incident, Initial evidence links, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • ITSM incident
  • Initial evidence links
Applicable tools
PagerDutyServiceNowAWS EKSAWS
Exit gate

The record contains enough context for a new responder to begin work without repeating intake.

23
Assess impact and severityOwner: Incident manager and business representative
Purpose

Determine affected users, geographies, transactions, data, security, workarounds, revenue, compliance, and urgency using the severity model.

Project application

The practical purpose of assess impact and severity is to create one factual view of impact, ownership, and time. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The implementation anchor comes from the project’s recorded scope: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with event streams, order databases, and dispatch optimization
  2. 02Assess impact and severityEstablish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceImpact statement, Severity decision and review time using PagerDuty, ServiceNow, AWS EKS
  5. 05Exit decisionSeverity reflects current business impact and has an explicit reassessment cadence. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use PagerDuty, ServiceNow, AWS EKS, AWS to establish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Impact statement, Severity decision and review time, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Impact statement
  • Severity decision and review time
Applicable tools
PagerDutyServiceNowAWS EKSAWS
Exit gate

Severity reflects current business impact and has an explicit reassessment cadence.

24
Assign incident command and communicationsOwner: Incident management lead
Purpose

Separate command, technical diagnosis, operations, scribe, business liaison, and communications roles for high-impact events.

Project application

This step turns assign incident command and communications into a controlled decision: create one factual view of impact, ownership, and time. The implementation follows “settle payment, refund, and partner balances” across restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The relevant project scope is concrete: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with mapping, traffic, and geolocation providers
  2. 02Assign incident command and communicationsEstablish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceRole roster, Bridge, timeline, and update schedule using PagerDuty, ServiceNow, AWS EKS
  5. 05Exit decisionEach role is staffed and the next stakeholder update and technical checkpoint have owners and times. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use PagerDuty, ServiceNow, AWS EKS, AWS to establish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Role roster, Bridge, timeline, and update schedule, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Role roster
  • Bridge, timeline, and update schedule
Applicable tools
PagerDutyServiceNowAWS EKSAWS
Exit gate

Each role is staffed and the next stakeholder update and technical checkpoint have owners and times.

25
Check recent change and service statusOwner: Release engineering and SRE
Purpose

Compare onset with deployments, configuration, infrastructure, certificates, access, vendor maintenance, feature flags, and cloud health.

Project application

Check recent change and service status is where the team must create one factual view of impact, ownership, and time. The team traces the change through “select an available restaurant and menu”, including its reliance on payment, messaging, and notification services and its effect on restaurant availability and menu data. Existing project evidence establishes the delivery context: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with restaurant devices and partner APIs
  2. 02Check recent change and service statusEstablish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceChange-to-incident timeline, Provider and dependency status snapshot using Amazon MSK, CloudWatch, OpenTelemetry
  5. 05Exit decisionRecent changes are confirmed, ruled out, or ranked as hypotheses using timestamps and version evidence. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Amazon MSK, CloudWatch, OpenTelemetry, AWS to establish severity, roles, communication cadence, change correlation, evidence preservation, and technical workstreams. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Change-to-incident timeline, Provider and dependency status snapshot, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Change-to-incident timeline
  • Provider and dependency status snapshot
Applicable tools
Amazon MSKCloudWatchOpenTelemetryAWS
Exit gate

Recent changes are confirmed, ruled out, or ranked as hypotheses using timestamps and version evidence.

Diagnose the fault

7 steps

Inspect recent change, application, runtime, network, identity, data, and external dependencies in an evidence-led order.

26
Triage the application layerOwner: Application support and development
Purpose

Inspect request failures, exceptions, releases, configuration, threads, memory, dependencies, feature flags, queues, and business-rule behavior.

Project application

At this point, triage the application layer must localize the failing layer using evidence. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The implementation anchor comes from the project’s recorded scope: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with payment, messaging, and notification services
  2. 02Triage the application layerTest recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceApplication logs and traces, Version-specific failure hypothesis using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionApplication behavior is either cleared or linked to a reproducible code, configuration, or dependency condition. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to test recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Application logs and traces, Version-specific failure hypothesis, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Application logs and traces
  • Version-specific failure hypothesis
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

Application behavior is either cleared or linked to a reproducible code, configuration, or dependency condition.

27
Triage runtime and infrastructureOwner: Platform and cloud operations
Purpose

Inspect hosts, pods, containers, services, events, health probes, scaling, disk, network interfaces, quotas, and control-plane health.

Project application

The practical purpose of triage runtime and infrastructure is to localize the failing layer using evidence. The implementation follows “transmit and accept the order at the restaurant” across mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The relevant project scope is concrete: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with event streams, order databases, and dispatch optimization
  2. 02Triage runtime and infrastructureTest recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceRuntime diagnostic capture, Resource and platform fault assessment using Grafana, PagerDuty, ServiceNow
  5. 05Exit decisionRuntime health is cleared or a specific capacity, configuration, rollout, or platform failure is evidenced. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Grafana, PagerDuty, ServiceNow, AWS to test recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Runtime diagnostic capture, Resource and platform fault assessment, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Runtime diagnostic capture
  • Resource and platform fault assessment
Applicable tools
GrafanaPagerDutyServiceNowAWS
Exit gate

Runtime health is cleared or a specific capacity, configuration, rollout, or platform failure is evidenced.

28
Triage network, DNS, and traffic pathsOwner: Network and platform engineering
Purpose

Test name resolution, routes, security rules, gateways, load balancers, ingress, proxies, firewalls, TLS handshakes, and upstream connectivity.

Project application

This step turns triage network, DNS, and traffic paths into a controlled decision: localize the failing layer using evidence. The team traces the change through “assign and route a courier”, including its reliance on restaurant devices and partner APIs and its effect on order state and promised delivery time. Existing project evidence establishes the delivery context: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerAssign and route a courier with mapping, traffic, and geolocation providers
  2. 02Triage network, DNS, and traffic pathsTest recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidencePath and DNS tests, Traffic-layer fault localization using Amazon MSK, CloudWatch, OpenTelemetry
  5. 05Exit decisionThe failed hop, policy, route, endpoint, or certificate is identified, or the network path is cleared with tests. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Amazon MSK, CloudWatch, OpenTelemetry, AWS to test recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Path and DNS tests, Traffic-layer fault localization, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Path and DNS tests
  • Traffic-layer fault localization
Applicable tools
Amazon MSKCloudWatchOpenTelemetryAWS
Exit gate

The failed hop, policy, route, endpoint, or certificate is identified, or the network path is cleared with tests.

29
Triage identity, secrets, and certificatesOwner: Identity and security engineering
Purpose

Check token issuance, managed identity, permissions, secret versions, rotation, expiry, trust chains, vault access, and authentication logs.

Project application

Triage identity, secrets, and certificates is where the team must localize the failing layer using evidence. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The implementation anchor comes from the project’s recorded scope: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with restaurant devices and partner APIs
  2. 02Triage identity, secrets, and certificatesTest recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceIdentity and access audit, Secret or certificate validation using PagerDuty, ServiceNow, AWS EKS
  5. 05Exit decisionAuthentication and authorization are cleared or the exact identity, permission, version, or trust failure is known. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use PagerDuty, ServiceNow, AWS EKS, AWS to test recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Identity and access audit, Secret or certificate validation, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Identity and access audit
  • Secret or certificate validation
Applicable tools
PagerDutyServiceNowAWS EKSAWS
Exit gate

Authentication and authorization are cleared or the exact identity, permission, version, or trust failure is known.

30
Triage data and storageOwner: Database, data, and storage operations
Purpose

Inspect connectivity, locks, slow queries, replication, capacity, schema, corruption signals, consistency, storage latency, and recent data changes.

Project application

At this point, triage data and storage must localize the failing layer using evidence. The implementation follows “settle payment, refund, and partner balances” across event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The relevant project scope is concrete: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with payment, messaging, and notification services
  2. 02Triage data and storageTest recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceDatabase and storage diagnostics, Integrity and replication assessment using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionData services are cleared or the causal query, lock, capacity, schema, replication, or storage condition is isolated. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to test recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Database and storage diagnostics, Integrity and replication assessment, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Database and storage diagnostics
  • Integrity and replication assessment
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

Data services are cleared or the causal query, lock, capacity, schema, replication, or storage condition is isolated.

31
Triage external dependencies and vendorsOwner: Integration owner and vendor manager
Purpose

Test downstream APIs, SaaS services, payment or identity providers, message endpoints, contracts, quotas, status pages, and support channels.

Project application

The practical purpose of triage external dependencies and vendors is to localize the failing layer using evidence. The team traces the change through “select an available restaurant and menu”, including its reliance on mapping, traffic, and geolocation providers and its effect on payment, refund, and settlement records. Existing project evidence establishes the delivery context: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with event streams, order databases, and dispatch optimization
  2. 02Triage external dependencies and vendorsTest recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceDependency probes and status, Vendor case and escalation timeline using OpenTelemetry, Grafana, PagerDuty
  5. 05Exit decisionThird-party impact is proven or ruled out, and an internal mitigation or vendor escalation has an owner. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use OpenTelemetry, Grafana, PagerDuty, AWS to test recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Dependency probes and status, Vendor case and escalation timeline, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Dependency probes and status
  • Vendor case and escalation timeline
Applicable tools
OpenTelemetryGrafanaPagerDutyAWS
Exit gate

Third-party impact is proven or ruled out, and an internal mitigation or vendor escalation has an owner.

32
Form and test evidence-led hypothesesOwner: Technical incident lead
Purpose

Rank plausible causes by timeline, blast radius, signals, recent change, and test cost; run read-only or safely reversible checks first.

Project application

This step turns form and test evidence-led hypotheses into a controlled decision: localize the failing layer using evidence. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The implementation anchor comes from the project’s recorded scope: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with mapping, traffic, and geolocation providers
  2. 02Form and test evidence-led hypothesesTest recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceHypothesis log, Test result and decision trail using DynamoDB, Amazon MSK, CloudWatch
  5. 05Exit decisionThe chosen mitigation addresses an evidenced failure mode and its risks are understood. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use DynamoDB, Amazon MSK, CloudWatch, AWS to test recent change, application, runtime, network, identity, data, and external dependency hypotheses in a safe order. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Hypothesis log, Test result and decision trail, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Hypothesis log
  • Test result and decision trail
Applicable tools
DynamoDBAmazon MSKCloudWatchAWS
Exit gate

The chosen mitigation addresses an evidenced failure mode and its risks are understood.

Restore the service

7 steps

Choose the smallest safe mitigation, validate business recovery and data integrity, and close only after sustained health is proven.

33
Select the safest mitigationOwner: Incident commander and service owner
Purpose

Choose rollback, traffic shift, restart, scale, configuration correction, feature disablement, dependency isolation, or failover based on recovery speed and risk.

Project application

Select the safest mitigation is where the team must recover the service using the smallest safe intervention. The implementation follows “transmit and accept the order at the restaurant” across payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The relevant project scope is concrete: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with restaurant devices and partner APIs
  2. 02Select the safest mitigationChoose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceMitigation decision, Approval, operator, and rollback point using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionThe action is authorized, bounded, observable, reversible where possible, and less risky than continued impact. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to choose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Mitigation decision, Approval, operator, and rollback point, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Mitigation decision
  • Approval, operator, and rollback point
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

The action is authorized, bounded, observable, reversible where possible, and less risky than continued impact.

34
Roll back the recent changeOwner: Release engineering
Purpose

Return application, infrastructure, configuration, database-compatible behavior, feature flag, or traffic to the last known safe state.

Project application

At this point, roll back the recent change must recover the service using the smallest safe intervention. The team traces the change through “assign and route a courier”, including its reliance on event streams, order databases, and dispatch optimization and its effect on courier location and assignment state. Existing project evidence establishes the delivery context: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerAssign and route a courier with payment, messaging, and notification services
  2. 02Roll back the recent changeChoose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceRollback execution log, Restored version and configuration using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionThe supported prior state is active and no incompatible data or dependency condition remains. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to choose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Rollback execution log, Restored version and configuration, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Rollback execution log
  • Restored version and configuration
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

The supported prior state is active and no incompatible data or dependency condition remains.

35
Scale, restart, or isolate the faultOwner: Platform operations and application owner
Purpose

Recover capacity, replace unhealthy instances, drain a faulty zone or node, pause a consumer, or isolate a failing dependency without widening impact.

Project application

The practical purpose of scale, restart, or isolate the fault is to recover the service using the smallest safe intervention. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The implementation anchor comes from the project’s recorded scope: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with event streams, order databases, and dispatch optimization
  2. 02Scale, restart, or isolate the faultChoose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceOperational action record, Before-and-after health comparison using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionCapacity and health recover without recurring saturation, duplication, data loss, or hidden backlog. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to choose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Operational action record, Before-and-after health comparison, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Operational action record
  • Before-and-after health comparison
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

Capacity and health recover without recurring saturation, duplication, data loss, or hidden backlog.

36
Fail over to the recovery serviceOwner: Business continuity, data, network, and platform leads
Purpose

Activate the approved recovery region, cluster, database, storage, connectivity, identity, secrets, and DNS sequence when local recovery cannot meet targets.

Project application

This step turns fail over to the recovery service into a controlled decision: recover the service using the smallest safe intervention. The implementation follows “settle payment, refund, and partner balances” across restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The relevant project scope is concrete: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with mapping, traffic, and geolocation providers
  2. 02Fail over to the recovery serviceChoose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceFailover timeline, RPO/RTO and replication result using Grafana, PagerDuty, ServiceNow
  5. 05Exit decisionThe complete critical journey works at the recovery location and data loss remains within the approved objective. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Grafana, PagerDuty, ServiceNow, AWS to choose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Failover timeline, RPO/RTO and replication result, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Failover timeline
  • RPO/RTO and replication result
Applicable tools
GrafanaPagerDutyServiceNowAWS
Exit gate

The complete critical journey works at the recovery location and data loss remains within the approved objective.

37
Validate technical recoveryOwner: SRE, QA, and application operations
Purpose

Confirm availability, error rate, latency, resource health, logs, dependencies, queues, scheduled work, replication, and deployment state after mitigation.

Project application

Validate technical recovery is where the team must recover the service using the smallest safe intervention. The team traces the change through “select an available restaurant and menu”, including its reliance on payment, messaging, and notification services and its effect on restaurant availability and menu data. Existing project evidence establishes the delivery context: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with restaurant devices and partner APIs
  2. 02Validate technical recoveryChoose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceRecovery validation report, Sustained telemetry window using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionHealth remains within normal thresholds for the agreed observation period under representative load. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to choose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Recovery validation report, Sustained telemetry window, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Recovery validation report
  • Sustained telemetry window
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

Health remains within normal thresholds for the agreed observation period under representative load.

38
Confirm business and data recoveryOwner: Business owner, data owner, and service owner
Purpose

Run critical user journeys and reconcile transactions, balances, files, messages, reports, or another domain-specific outcome.

Project application

At this point, confirm business and data recovery must recover the service using the smallest safe intervention. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The implementation anchor comes from the project’s recorded scope: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with payment, messaging, and notification services
  2. 02Confirm business and data recoveryChoose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceBusiness validation sign-off, Data reconciliation result using PagerDuty, ServiceNow, AWS EKS
  5. 05Exit decisionThe service outcome is correct, not merely reachable, and any backlog or exception has a managed plan. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use PagerDuty, ServiceNow, AWS EKS, AWS to choose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Business validation sign-off, Data reconciliation result, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Business validation sign-off
  • Data reconciliation result
Applicable tools
PagerDutyServiceNowAWS EKSAWS
Exit gate

The service outcome is correct, not merely reachable, and any backlog or exception has a managed plan.

39
Communicate recovery and close the incidentOwner: Incident commander and communications lead
Purpose

State recovery time, scope, residual risk, monitoring period, workarounds, follow-up ownership, and the next RCA milestone.

Project application

The practical purpose of communicate recovery and close the incident is to recover the service using the smallest safe intervention. The implementation follows “transmit and accept the order at the restaurant” across mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The relevant project scope is concrete: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with event streams, order databases, and dispatch optimization
  2. 02Communicate recovery and close the incidentChoose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceRecovery communication, Closure checklist and final timeline using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionStakeholders agree impact has ended, monitoring is stable, evidence is preserved, and follow-up records are linked. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to choose rollback, failover, scale, restart, configuration correction, replay, or dependency isolation based on impact and reversibility. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Recovery communication, Closure checklist and final timeline, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Recovery communication
  • Closure checklist and final timeline
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

Stakeholders agree impact has ended, monitoring is stable, evidence is preserved, and follow-up records are linked.

Remove the cause

7 steps

Explain technical and process causes, implement a permanently tested correction, and prove that detection and prevention controls improved.

40
Complete root-cause analysisOwner: Service owner and contributing engineering teams
Purpose

Explain trigger, technical root cause, contributing conditions, impact, detection gap, timeline, recovery, and why controls did not prevent recurrence.

Project application

This step turns complete root-cause analysis into a controlled decision: convert incident evidence into a permanent correction. The team traces the change through “assign and route a courier”, including its reliance on restaurant devices and partner APIs and its effect on order state and promised delivery time. Existing project evidence establishes the delivery context: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerAssign and route a courier with mapping, traffic, and geolocation providers
  2. 02Complete root-cause analysisExplain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceReviewed RCA, Linked logs, traces, changes, and decisions using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionThe analysis is evidence-based, goes beyond the final human action, and explains both occurrence and escape. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to explain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Reviewed RCA, Linked logs, traces, changes, and decisions, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Reviewed RCA
  • Linked logs, traces, changes, and decisions
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

The analysis is evidence-based, goes beyond the final human action, and explains both occurrence and escape.

41
Identify contributing factors and control gapsOwner: Problem management, engineering, and security
Purpose

Review design, testing, capacity, process, alerting, documentation, access, vendor, and organizational factors that increased likelihood or duration.

Project application

Identify contributing factors and control gaps is where the team must convert incident evidence into a permanent correction. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The implementation anchor comes from the project’s recorded scope: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with restaurant devices and partner APIs
  2. 02Identify contributing factors and control gapsExplain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceContributing-factor map, Prevention and detection gap list using Amazon MSK, CloudWatch, OpenTelemetry
  5. 05Exit decisionEvery material factor is accepted, rejected with evidence, or linked to an owned action. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Amazon MSK, CloudWatch, OpenTelemetry, AWS to explain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Contributing-factor map, Prevention and detection gap list, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Contributing-factor map
  • Prevention and detection gap list
Applicable tools
Amazon MSKCloudWatchOpenTelemetryAWS
Exit gate

Every material factor is accepted, rejected with evidence, or linked to an owned action.

42
Create the problem record and actionsOwner: Problem manager and service owner
Purpose

Convert the RCA into prioritized corrective actions with risk, owner, date, funding, verification, and temporary control.

Project application

At this point, create the problem record and actions must convert incident evidence into a permanent correction. The implementation follows “settle payment, refund, and partner balances” across event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The relevant project scope is concrete: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with payment, messaging, and notification services
  2. 02Create the problem record and actionsExplain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceProblem record, Corrective-action backlog using DynamoDB, Amazon MSK, CloudWatch
  5. 05Exit decisionActions address cause, contributing factors, detection, recovery, and documentation—not only the visible symptom. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use DynamoDB, Amazon MSK, CloudWatch, AWS to explain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Problem record, Corrective-action backlog, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Problem record
  • Corrective-action backlog
Applicable tools
DynamoDBAmazon MSKCloudWatchAWS
Exit gate

Actions address cause, contributing factors, detection, recovery, and documentation—not only the visible symptom.

43
Design the permanent correctionOwner: Architecture, development, platform, and security leads
Purpose

Specify the durable code, infrastructure, configuration, data, test, monitoring, or process change and its compatibility and rollback approach.

Project application

The practical purpose of design the permanent correction is to convert incident evidence into a permanent correction. The team traces the change through “select an available restaurant and menu”, including its reliance on mapping, traffic, and geolocation providers and its effect on payment, refund, and settlement records. Existing project evidence establishes the delivery context: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with event streams, order databases, and dispatch optimization
  2. 02Design the permanent correctionExplain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceCorrection design, Test and rollout strategy using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionThe proposed fix removes the cause without creating an unowned availability, security, data, or support risk. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to explain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Correction design, Test and rollout strategy, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Correction design
  • Test and rollout strategy
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

The proposed fix removes the cause without creating an unowned availability, security, data, or support risk.

44
Test and authorize the corrective changeOwner: QA, security, change management, and service owner
Purpose

Reproduce the failure, prove the fix, run regression, security, performance, recovery, and negative tests, and obtain risk-based approval.

Project application

This step turns test and authorize the corrective change into a controlled decision: convert incident evidence into a permanent correction. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The implementation anchor comes from the project’s recorded scope: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with mapping, traffic, and geolocation providers
  2. 02Test and authorize the corrective changeExplain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceReproduction and test results, Approved change record using OpenTelemetry, Grafana, PagerDuty
  5. 05Exit decisionThe previous failure no longer occurs and the evidence covers expected load, dependencies, and rollback. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use OpenTelemetry, Grafana, PagerDuty, AWS to explain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Reproduction and test results, Approved change record, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Reproduction and test results
  • Approved change record
Applicable tools
OpenTelemetryGrafanaPagerDutyAWS
Exit gate

The previous failure no longer occurs and the evidence covers expected load, dependencies, and rollback.

45
Deploy the correction under controlOwner: Release engineering and operations
Purpose

Release using canary, rolling, blue-green, maintenance, or another strategy appropriate to blast radius and state compatibility.

Project application

Deploy the correction under control is where the team must convert incident evidence into a permanent correction. The implementation follows “transmit and accept the order at the restaurant” across payment, messaging, and notification services. The protected business boundary is restaurant availability and menu data. The relevant project scope is concrete: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerTransmit and accept the order at the restaurant with restaurant devices and partner APIs
  2. 02Deploy the correction under controlExplain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceDeployment and validation log, Version and traffic record using ServiceNow, AWS EKS, DynamoDB
  5. 05Exit decisionThe correction is active, critical journeys pass, and rollback remains available through the observation period. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “assign and route a courier”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use ServiceNow, AWS EKS, DynamoDB, AWS to explain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Deployment and validation log, Version and traffic record, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Deployment and validation log
  • Version and traffic record
Applicable tools
ServiceNowAWS EKSDynamoDBAWS
Exit gate

The correction is active, critical journeys pass, and rollback remains available through the observation period.

46
Observe and close prevention actionsOwner: Service owner, SRE, and problem management
Purpose

Measure recurrence, alert behavior, service indicators, support load, and action effectiveness long enough to validate the intended result.

Project application

At this point, observe and close prevention actions must convert incident evidence into a permanent correction. The team traces the change through “assign and route a courier”, including its reliance on event streams, order databases, and dispatch optimization and its effect on courier location and assignment state. Existing project evidence establishes the delivery context: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerAssign and route a courier with payment, messaging, and notification services
  2. 02Observe and close prevention actionsExplain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidencePost-change observation report, Action closure evidence using AWS EKS, DynamoDB, Amazon MSK
  5. 05Exit decisionThe corrective action has measurable proof of effectiveness and the knowledge base and runbooks are updated. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “complete delivery and customer notification”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use AWS EKS, DynamoDB, Amazon MSK, AWS to explain trigger and contributing conditions, fix code or operations, add regression and detection coverage, and govern the change. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Post-change observation report, Action closure evidence, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Post-change observation report
  • Action closure evidence
Applicable tools
AWS EKSDynamoDBAmazon MSKAWS
Exit gate

The corrective action has measurable proof of effectiveness and the knowledge base and runbooks are updated.

Strengthen operations

4 steps

Exercise continuity, govern lifecycle risks, improve capacity and cost, and measure support performance over time.

47
Exercise backup restoration and disaster recoveryOwner: Business continuity, data, platform, and application teams
Purpose

Restore protected data and configuration, execute failover and failback, validate dependencies, and measure actual RPO and RTO.

Project application

The practical purpose of exercise backup restoration and disaster recovery is to raise reliability, recovery, security, capacity, and support maturity. In the on-demand food delivery context, the work follows the journey from “complete delivery and customer notification” through mapping, traffic, and geolocation providers. The protected business boundary is payment, refund, and settlement records. The implementation anchor comes from the project’s recorded scope: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Apply journey-based canary, rollback, and cutover checks to address the risk that duplicate events trigger double preparation, assignment, or payment; judge the result using order acceptance and completion rate.

Step execution flow
  1. 01Operational triggerComplete delivery and customer notification with event streams, order databases, and dispatch optimization
  2. 02Exercise backup restoration and disaster recoveryExercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses
  3. 03Control pointEvent idempotency and ordered state transitions
  4. 04EvidenceRestore and DR drill report, Measured gaps and remediation using Grafana, PagerDuty, ServiceNow
  5. 05Exit decisionA representative service is recoverable by on-call staff within approved objectives using current runbooks. Confirm dispatch and estimated-arrival accuracy.
Detailed activities
  1. Run the operational check against “settle payment, refund, and partner balances”. Correlate restaurant devices and partner APIs, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Grafana, PagerDuty, ServiceNow, AWS to exercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses. Project scope for this action: Executed feature, traffic, queue, scaling, rollback, and partner-isolation mitigations. Stop and escalate if the action could cause regional demand exhausts dispatch or notification capacity.
  3. Record Restore and DR drill report, Measured gaps and remediation, the operator, timestamps, affected cohort, before-and-after state, and the use of event idempotency and ordered state transitions. Close the step only when refund and partner-settlement completion confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Restore and DR drill report
  • Measured gaps and remediation
Applicable tools
GrafanaPagerDutyServiceNowAWS
Exit gate

A representative service is recoverable by on-call staff within approved objectives using current runbooks.

48
Govern patch, certificate, and access lifecyclesOwner: Security, identity, platform, and application owners
Purpose

Patch supported versions, rotate certificates and secrets, review privileged access, remove stale accounts, and track critical vulnerabilities.

Project application

This step turns govern patch, certificate, and access lifecycles into a controlled decision: raise reliability, recovery, security, capacity, and support maturity. The implementation follows “settle payment, refund, and partner balances” across restaurant devices and partner APIs. The protected business boundary is order state and promised delivery time. The relevant project scope is concrete: Managed peak-event command and customer-impact communication. Apply event idempotency and ordered state transitions to address the risk that regional demand exhausts dispatch or notification capacity; judge the result using dispatch and estimated-arrival accuracy.

Step execution flow
  1. 01Operational triggerSettle payment, refund, and partner balances with mapping, traffic, and geolocation providers
  2. 02Govern patch, certificate, and access lifecyclesExercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses
  3. 03Control pointRegional traffic isolation and queue back-pressure
  4. 04EvidenceLifecycle compliance report, Rotation, patch, and access-review records using OpenTelemetry, Grafana, PagerDuty
  5. 05Exit decisionNo critical asset lacks an owner, supported version, expiry control, approved access, or remediation plan. Confirm event lag and in-flight order consistency.
Detailed activities
  1. Run the operational check against “select an available restaurant and menu”. Correlate payment, messaging, and notification services, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use OpenTelemetry, Grafana, PagerDuty, AWS to exercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses. Project scope for this action: Managed peak-event command and customer-impact communication. Stop and escalate if the action could cause a partial migration loses in-flight orders or courier updates.
  3. Record Lifecycle compliance report, Rotation, patch, and access-review records, the operator, timestamps, affected cohort, before-and-after state, and the use of regional traffic isolation and queue back-pressure. Close the step only when order acceptance and completion rate confirms that the service is moving toward the expected outcome: connected recovery validation to completed and financially correct orders.
Required evidence
  • Lifecycle compliance report
  • Rotation, patch, and access-review records
Applicable tools
OpenTelemetryGrafanaPagerDutyAWS
Exit gate

No critical asset lacks an owner, supported version, expiry control, approved access, or remediation plan.

49
Improve capacity, cost, and alert qualityOwner: SRE, FinOps, platform, and service owner
Purpose

Forecast demand, tune scaling and reservations, remove waste, reduce noisy alerts, and preserve the headroom required by service targets.

Project application

Improve capacity, cost, and alert quality is where the team must raise reliability, recovery, security, capacity, and support maturity. The team traces the change through “select an available restaurant and menu”, including its reliance on payment, messaging, and notification services and its effect on restaurant availability and menu data. Existing project evidence establishes the delivery context: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Apply regional traffic isolation and queue back-pressure to address the risk that a partial migration loses in-flight orders or courier updates; judge the result using event lag and in-flight order consistency.

Step execution flow
  1. 01Operational triggerSelect an available restaurant and menu with restaurant devices and partner APIs
  2. 02Improve capacity, cost, and alert qualityExercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses
  3. 03Control pointLive order reconciliation and exception ownership
  4. 04EvidenceCapacity and cost plan, Alert-quality and SLO comparison using Grafana, PagerDuty, ServiceNow
  5. 05Exit decisionOptimization has measured benefit and does not reduce performance, detection, availability, or recovery capability. Confirm refund and partner-settlement completion.
Detailed activities
  1. Run the operational check against “price and authorize the order”. Correlate event streams, order databases, and dispatch optimization, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use Grafana, PagerDuty, ServiceNow, AWS to exercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses. Project scope for this action: Monitored conversion, payment, restaurant acceptance, courier assignment, ETA, delivery, and refund journeys. Stop and escalate if the action could cause the customer, restaurant, and courier see different order states.
  3. Record Capacity and cost plan, Alert-quality and SLO comparison, the operator, timestamps, affected cohort, before-and-after state, and the use of live order reconciliation and exception ownership. Close the step only when dispatch and estimated-arrival accuracy confirms that the service is moving toward the expected outcome: improved response to meal-peak saturation.
Required evidence
  • Capacity and cost plan
  • Alert-quality and SLO comparison
Applicable tools
GrafanaPagerDutyServiceNowAWS
Exit gate

Optimization has measured benefit and does not reduce performance, detection, availability, or recovery capability.

50
Review operational KPIs and improve the serviceOwner: Support manager, service owner, engineering, and business
Purpose

Review availability, error budget, MTTD, MTTA, MTTR, recurrence, change failure, backup, capacity, ticket patterns, automation, and customer impact.

Project application

At this point, review operational KPIs and improve the service must raise reliability, recovery, security, capacity, and support maturity. In the on-demand food delivery context, the work follows the journey from “price and authorize the order” through event streams, order databases, and dispatch optimization. The protected business boundary is courier location and assignment state. The implementation anchor comes from the project’s recorded scope: Correlated regional demand, partner, map, queue, database, and release signals. Apply live order reconciliation and exception ownership to address the risk that the customer, restaurant, and courier see different order states; judge the result using refund and partner-settlement completion.

Step execution flow
  1. 01Operational triggerPrice and authorize the order with payment, messaging, and notification services
  2. 02Review operational KPIs and improve the serviceExercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses
  3. 03Control pointJourney-based canary, rollback, and cutover checks
  4. 04EvidenceMonthly service review, Prioritized improvement roadmap using CloudWatch, OpenTelemetry, Grafana
  5. 05Exit decisionTrends lead to funded owners and dates, and completed improvements are verified against service and business outcomes. Confirm order acceptance and completion rate.
Detailed activities
  1. Run the operational check against “transmit and accept the order at the restaurant”. Correlate mapping, traffic, and geolocation providers, the deployed version, current alerts, open incidents, and recent changes before touching the live service.
  2. Use CloudWatch, OpenTelemetry, Grafana, AWS to exercise continuity, remove lifecycle risks, tune capacity and cost, improve automation, and track recurring service weaknesses. Project scope for this action: Correlated regional demand, partner, map, queue, database, and release signals. Stop and escalate if the action could cause duplicate events trigger double preparation, assignment, or payment.
  3. Record Monthly service review, Prioritized improvement roadmap, the operator, timestamps, affected cohort, before-and-after state, and the use of journey-based canary, rollback, and cutover checks. Close the step only when event lag and in-flight order consistency confirms that the service is moving toward the expected outcome: reduced time to isolate partner and regional failures.
Required evidence
  • Monthly service review
  • Prioritized improvement roadmap
Applicable tools
CloudWatchOpenTelemetryGrafanaAWS
Exit gate

Trends lead to funded owners and dates, and completed improvements are verified against service and business outcomes.