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| Criterion |  DevOps Blameless Postmortem |  Decision Making DACI |  Decision Making Assumption Surfacing |
|---|---|---|---|
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. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 30-90 min | 30-60 min | 45-90 min |
Participantsdifferent | 3-12 | 2-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | DACI Matrix, Decision Owner, Decision Log | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | DecisionRolesGovernanceAlignment | AssumptionsRiskDecisionDiscovery |
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