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| Criterion |  DevOps Blameless Postmortem |  Architecture Architecture Decision Record |  DevOps Incident Timeline Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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. | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 15-45 min | 60-180 min |
Participantsdifferent | 3-12 | 1-3 | 3-10 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | ADR File, Decision Log, Rationale | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | ArchitectureRationaleDocumentationGovernance | IncidentTimelineSite Reliability Engineering |
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