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| Criterion |  Product Discovery Fake Door Test |  Product Discovery Opportunity Interview |  Product Discovery Opportunity Solution Tree |  Product Discovery Problem Interview |
|---|---|---|---|---|
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 opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | When discovery keeps swinging between goals, ideas, and learning loops, it creates clear steering logic. It connects the desired outcome, opportunities, and experiments into a legible structure. | 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. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-5 Tage | 30-60 min je Interview | 1-2 h Setup, laufend | 30-60 min je Interview |
Participantsdifferent | Nutzertraffic | 5-12 Interviews | 2-6 | 5-12 Interviews |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Click Data, Interest Signal, Learning Decision | Interview Notes, Opportunity Themes, Customer Quotes | Opportunity Solution Tree, Experiment Backlog, Learning Log | Problem Evidence, Risk Notes, Customer Segments |
Tags1 shared | ValidationExperimentsDemandDiscovery | DiscoveryInterviewsOpportunityCustomer | DiscoveryOutcomesExperimentsOpportunity | DiscoveryInterviewsValidation |