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| Criterion |  Operations Learning Review |  DevOps Blameless Postmortem |  DevOps Incident Timeline Analysis |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 1-3 h | 30-90 min | 60-180 min | 45–75 min |
Participantsdifferent | 3-10 | 3-12 | 3-10 | Team members involved |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Learning Review Notes, System Factors, Improvement Actions | Postmortem Doc, Action Items, Timeline | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | LearningRetrospectiveIncidentOperations | Site Reliability EngineeringIncidentLearningReliability | IncidentTimelineSite Reliability Engineering | RetrospectiveLearningReflectionTeam |