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| Criterion |  DevOps Blameless Postmortem |  Operations After-Action Review |  DevOps Incident Timeline Analysis |  Operations Learning Review |
|---|---|---|---|---|
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. | 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 a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 30-90 min | 20-45 min | 60-180 min | 1-3 h |
Participantsdifferent | 3-12 | 3-12 | 3-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Lessons learned, Action items, Event summary | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LearningOperationsImprovement | IncidentTimelineSite Reliability Engineering | LearningRetrospectiveIncidentOperations |