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| Criterion |  Product Discovery Learning Card |  Agile 4Ls Retrospective |  Product Discovery MVP Test Matrix |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 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 | Medium | Medium |
Timedifferent | 25-40 min | 45–75 min | 45-75 min | 1-5 Tage |
Participantsdifferent | 1-5 | Team members involved | 2-8 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Workshop | Async |
Outputdifferent | Learning Card with evidence and next action | 4Ls Board, Learning Themes, Improvement Actions | Test Matrix, Test Plan | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ExperimentsValidationDiscoveryLearning | RetrospectiveLearningReflectionTeam | ExperimentsValidationDiscoveryOptions | ValidationExperimentsDemandDiscovery |