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| Criterion |  DevOps Blameless Postmortem |  Architecture Architecture Inception Canvas |  Operations 5 Whys |
|---|---|---|---|
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. | The Architecture Inception Canvas bundles the first architecture questions into a compact decision picture. It fits when an initiative is still in motion but still needs clear guardrails. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 30-90 min | 1-2 h | 15-30 min |
Participantsdifferent | 3-12 | 3-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Inception Canvas, Risks, Goal List, Open Questions | Root cause notes, Countermeasures |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | AlignmentArchitectureCanvas | Root causeIncidentLeanProblem solving |
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