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| Criterion |  Product Discovery Fake Door Test |  UX Research Personas |  UX Research User Interviews |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
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 target groups stay too vague and teams talk about the same people differently, personas create a shared, solid picture of usage. Condensed profiles make needs, contexts, and differences tangible enough for decisions. | 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 1-5 Tage | 1-3 Tage | 30–60 min per interview | 45-75 min |
Participantsdifferent | Nutzertraffic | Internes Team | 1 participant per interview | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Click Data, Interest Signal, Learning Decision | Persona Profiles, Needs Summary, Scenario Notes | Interview Notes, Themes, Insight Summary | Test Matrix, Test Plan |
Tagsno overlap | ValidationExperimentsDemandDiscovery | ResearchCustomerSynthesis | QualitativeResearchCustomerDiscovery | ExperimentsValidationDiscoveryOptions |