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| Criterion |  UX Research User Interviews |  Product Discovery Fake Door Test |  Product Discovery Concierge MVP |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | 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. | 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 an idea can first fail or grow through genuine hands-on support, it relies on manual work instead of automation. It shows whether user value holds up even under manual execution. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30–60 min per interview | 1-5 Tage | 1-4 Wochen | 25-40 min |
Participantsdifferent | 1 participant per interview | Nutzertraffic | 3-10 Kunden | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Click Data, Interest Signal, Learning Decision | Concierge Learnings, Service Blueprint, MVP Risks | Learning Card with evidence and next action |
Tags1 shared | QualitativeResearchCustomerDiscovery | ValidationExperimentsDemandDiscovery | MVPValidationServiceDiscovery | ExperimentsValidationDiscoveryLearning |