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| Criterion |  Agile Sprint Retrospective |  Agile 4Ls Retrospective |  Agile Starfish Retrospective |  Operations After-Action Review |
|---|---|---|---|---|
Purposedifferent | When a sprint is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes together. | 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. | 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 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 45–75 min | 45-90 min | 20-45 min |
Participantsdifferent | Scrum Team | Team members involved | 4-12 | 3-12 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Improvement actions, Team agreements | 4Ls Board, Learning Themes, Improvement Actions | Starfish Board, Practice Changes, Experiments | Lessons learned, Action items, Event summary |
Tagsno overlap | RetrospectiveImprovementLearning | RetrospectiveLearningReflectionTeam | RetrospectiveImprovementExperimentsTeam | LearningOperationsImprovement |