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| Criterion |  Product Discovery Opportunity Interview |  UX Research User Interviews |  Operations PDCA Cycle |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | 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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | For an improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. | 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 | 30-60 min je Interview | 30–60 min per interview | 1 h bis mehrere Wochen | 1-5 Tage |
Participantsdifferent | 5-12 Interviews | 1 participant per interview | 1-8 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Interview Notes, Opportunity Themes, Customer Quotes | Interview Notes, Themes, Insight Summary | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | DiscoveryInterviewsOpportunityCustomer | QualitativeResearchCustomerDiscovery | Continuous improvementLeanExperiments | ValidationExperimentsDemandDiscovery |