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| Criterion |  Product Discovery Test Card |  Agile Affinity Estimation |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | Medium | Low | Medium |
Timedifferent | 20-35 min | 30-90 min | 25-40 min | 1-5 Tage |
Participantsdifferent | 1-5 | 3-12 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Async |
Outputdifferent | Test Card with a pre-set threshold | Affinity Size Map, Grouped Estimates, Unclear Items | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | EstimationBacklogRelative sizing | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |