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| Criterion |  Agile 4Ls Retrospective |  Agile Starfish Retrospective |  Product Discovery Assumption Mapping |  Agile Start Stop Continue |
|---|---|---|---|---|
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. | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | When a team wants to deliberately adjust its working behavior, it makes habits visible and assessable. It focuses on concrete changes instead of diffuse mood. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 45–75 min | 45-90 min | 45-60 min | 30-60 min |
Participantsdifferent | Team members involved | 4-12 | 2-8 | 3-12 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | 4Ls Board, Learning Themes, Improvement Actions | Starfish Board, Practice Changes, Experiments | Assumption map, Test backlog, Risk ranking | Start Stop Continue Board, Improvement Actions |
Tagsno overlap | RetrospectiveLearningReflectionTeam | RetrospectiveImprovementExperimentsTeam | AssumptionsRiskExperimentsValidation | RetrospectiveImprovementTeamReflection |