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| Criterion |  DevOps Incident Command |  Architecture Architecture Decision Record |  DevOps Blameless Postmortem |  Operations Runbook |
|---|---|---|---|---|
Purposedifferent | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | For recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | As needed | 15-45 min | 30-90 min | 20-60 min |
Participantsdifferent | 4-15 | 1-3 | 3-12 | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Incident Log, Action Tracker, Stakeholder Updates | ADR File, Decision Log, Rationale | Postmortem Doc, Action Items, Timeline | Runbook, Checklist, Escalation Path |
Tagsno overlap | IncidentOperationsReliability | ArchitectureRationaleDocumentationGovernance | Site Reliability EngineeringIncidentLearningReliability | OperationsReliabilityDocumentation |