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| Criterion |  DevOps Blameless Postmortem |  Operations Learning Review |  DevOps Incident Timeline Analysis |  Operations After-Action 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 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. | 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 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-90 min | 1-3 h | 60-180 min | 20-45 min |
Participantsdifferent | 3-12 | 3-10 | 3-10 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Learning Review Notes, System Factors, Improvement Actions | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Lessons learned, Action items, Event summary |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LearningRetrospectiveIncidentOperations | IncidentTimelineSite Reliability Engineering | LearningOperationsImprovement |