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| Criterion |  DevOps Blameless Postmortem |  Architecture Architecture Decision Record |  Decision Making Cynefin Workshop |  Decision Making DACI |
|---|---|---|---|---|
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. | When problems are unclear, chaotic, or only seemingly familiar, standard recipes fall short. A Cynefin Workshop sorts situations by the nature of their problem and connects them with matching action logic. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-90 min | 15-45 min | 60-180 min | 30-60 min |
Participantsdifferent | 3-12 | 1-3 | 4-20 | 2-10 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | ADR File, Decision Log, Rationale | Cynefin Map, Domain-specific Actions, Sensemaking Notes | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | ArchitectureRationaleDocumentationGovernance | ComplexitySensemakingDecision | DecisionRolesGovernanceAlignment |