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| Criterion |  DevOps Blameless Postmortem |  Operations Causal Factor Analysis |  Decision Making DACI |  Decision Making Decision Rights Mapping |
|---|---|---|---|---|
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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. |
Complexitydifferent | Medium | High | Low | Medium |
Timedifferent | 30-90 min | 2-6 h | 30-60 min | 90-180 min |
Participantsdifferent | 3-12 | 3-10 | 2-10 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | DACI Matrix, Decision Owner, Decision Log | Decision Rights Matrix, Agreement |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | CausalityIncidentRoot causeTimeline | DecisionRolesGovernanceAlignment | DecisionGovernanceAlignmentResponsibility |