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| Criterion |  Agile Starfish Retrospective |  Operations Learning Review |  Agile 4Ls Retrospective |  Operations After-Action Review |
|---|---|---|---|---|
Purposedifferent | When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. | 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. | 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 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 | Low | Medium | Low | Low |
Timedifferent | 45-90 min | 1-3 h | 45–75 min | 20-45 min |
Participantsdifferent | 4-12 | 3-10 | Team members involved | 3-12 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Starfish Board, Practice Changes, Experiments | Learning Review Notes, System Factors, Improvement Actions | 4Ls Board, Learning Themes, Improvement Actions | Lessons learned, Action items, Event summary |
Tagsno overlap | RetrospectiveImprovementExperimentsTeam | LearningRetrospectiveIncidentOperations | RetrospectiveLearningReflectionTeam | LearningOperationsImprovement |