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| Criterion |  Operations After-Action Review |  DevOps Incident Timeline Analysis |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. | 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. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 20-45 min | 60-180 min | 30-90 min |
Participantsdifferent | 3-12 | 3-10 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | LearningOperationsImprovement | IncidentTimelineSite Reliability Engineering | Site Reliability EngineeringIncidentLearningReliability |
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