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| Criterion |  Agile 4Ls Retrospective |  DevOps Blameless Postmortem |  Decision Making Decision Tree |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | 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. | 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 decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | 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 | Low | Medium | Medium | Medium |
Timedifferent | 45–75 min | 30-90 min | 30-90 min | 1-3 h |
Participantsdifferent | Team members involved | 3-12 | 1-6 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 4Ls Board, Learning Themes, Improvement Actions | Postmortem Doc, Action Items, Timeline | Decision Tree, Option Map, Assumption List | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | RetrospectiveLearningReflectionTeam | Site Reliability EngineeringIncidentLearningReliability | DecisionTreeOptions | LearningRetrospectiveIncidentOperations |