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| Criterion |  Operations Causal Factor Analysis |  DevOps Blameless Postmortem |  Architecture Architecture Decision Record |
|---|---|---|---|
Purposedifferent | 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. | 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. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 2-6 h | 30-90 min | 15-45 min |
Participantsdifferent | 3-10 | 3-12 | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Postmortem Doc, Action Items, Timeline | ADR File, Decision Log, Rationale |
Tagsno overlap | CausalityIncidentRoot causeTimeline | Site Reliability EngineeringIncidentLearningReliability | ArchitectureRationaleDocumentationGovernance |
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