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| Criterion |  Product Discovery Fake Door Test |  Product Discovery Smoke Test |  Agile Affinity Estimation |
|---|---|---|---|
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 demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 1-5 Tage | 1-5 Tage | 30-90 min |
Participantsdifferent | Nutzertraffic | Nutzertraffic | 3-12 |
Formatdifferent | Async | Async | Workshop |
Outputdifferent | Click Data, Interest Signal, Learning Decision | Interest Metrics, Conversion Signal, Learning Note | Affinity Size Map, Grouped Estimates, Unclear Items |
Tagsno overlap | ValidationExperimentsDemandDiscovery | ValidationExperimentsDemandGrowth | EstimationBacklogRelative sizing |
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