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| Criterion |  Product Discovery Fake Door Test |  Product Discovery Problem Interview |  Growth A/B Testing |  Product Discovery Smoke Test |
|---|---|---|---|---|
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 the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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. |
Complexitydifferent | Medium | Medium | High | Low |
Timedifferent | 1-5 Tage | 30-60 min je Interview | 1-4 Wochen | 1-5 Tage |
Participantsdifferent | Nutzertraffic | 5-12 Interviews | 1-6 | Nutzertraffic |
Formatdifferent | Async | Workshop + async | Async | Async |
Outputdifferent | Click Data, Interest Signal, Learning Decision | Problem Evidence, Risk Notes, Customer Segments | Experiment results, Decision log, Learning summary | Interest Metrics, Conversion Signal, Learning Note |
Tags1 shared | ValidationExperimentsDemandDiscovery | DiscoveryInterviewsValidation | ExperimentsGrowthAnalyticsValidation | ValidationExperimentsDemandGrowth |