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| Criterion |  Agile Affinity Estimation |  Product Discovery Smoke Test |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | 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. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | Medium | Low | Low | Medium |
Timedifferent | 30-90 min | 1-5 Tage | 20-35 min | 1-5 Tage |
Participantsdifferent | 3-12 | Nutzertraffic | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Async | Workshop + async | Async |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Interest Metrics, Conversion Signal, Learning Note | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | EstimationBacklogRelative sizing | ValidationExperimentsDemandGrowth | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |