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| Criterion |  Agile Mad Sad Glad |  Agile 4Ls Retrospective |  DevOps Blameless Postmortem |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | When a team's or workshop's mood needs to become readable, it structures emotional signals with little setup. It makes strain, relief, and sources of energy tangible. | 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. | 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 | Low | Medium | Medium |
Timedifferent | 30-60 min | 45–75 min | 30-90 min | 1-3 h |
Participantsdifferent | 3-10 | Team members involved | 3-12 | 3-10 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Emotion Board, Themes, Action Items | 4Ls Board, Learning Themes, Improvement Actions | Postmortem Doc, Action Items, Timeline | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | RetrospectiveTeamReflection | RetrospectiveLearningReflectionTeam | Site Reliability EngineeringIncidentLearningReliability | LearningRetrospectiveIncidentOperations |