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| Criterion |  Architecture Architecture Decision Record |  DevOps Incident Command |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 15-45 min | As needed | 30-90 min |
Participantsdifferent | 1-3 | 4-15 | 3-12 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Incident Log, Action Tracker, Stakeholder Updates | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | IncidentOperationsReliability | Site Reliability EngineeringIncidentLearningReliability |
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