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| Criterion |  Agile 4Ls Retrospective |  Product Discovery Experiment Canvas |  Agile Start Stop Continue |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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 experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | 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. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 45–75 min | 30-60 min | 30-60 min | 1-5 Tage |
Participantsdifferent | Team members involved | 1-5 | 3-12 | Nutzertraffic |
Formatdifferent | Workshop | Workshop + async | Workshop | Async |
Outputdifferent | 4Ls Board, Learning Themes, Improvement Actions | Completed Experiment Canvas, Success Metric | Start Stop Continue Board, Improvement Actions | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | RetrospectiveLearningReflectionTeam | ExperimentsValidationDiscoveryHypothesis | RetrospectiveImprovementTeamReflection | ValidationExperimentsDemandDiscovery |