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| Criterion |  Product Discovery Fake Door Test |  Agile 4Ls Retrospective |  Product Discovery MVP Test Matrix |  Product Discovery Experiment Canvas |
|---|---|---|---|---|
Purposedifferent | 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. | 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. | 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-5 Tage | 45–75 min | 45-75 min | 30-60 min |
Participantsdifferent | Nutzertraffic | Team members involved | 2-8 | 1-5 |
Formatdifferent | Async | Workshop | Workshop | Workshop + async |
Outputdifferent | Click Data, Interest Signal, Learning Decision | 4Ls Board, Learning Themes, Improvement Actions | Test Matrix, Test Plan | Completed Experiment Canvas, Success Metric |
Tagsno overlap | ValidationExperimentsDemandDiscovery | RetrospectiveLearningReflectionTeam | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryHypothesis |