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| Criterion |  UX Research User Interviews |  Product Discovery Concierge MVP |  UX Design Customer Journey Canvas |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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 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. | When a journey needs to be understood across several phases, it arranges experience, touchpoints, and opportunities into one picture. It makes gaps and friction along the user path clear. | 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 | Low | Medium | Medium | Medium |
Timedifferent | 30–60 min per interview | 1-4 Wochen | 1-3 h | 1-5 Tage |
Participantsdifferent | 1 participant per interview | 3-10 Kunden | 3-10 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Concierge Learnings, Service Blueprint, MVP Risks | Customer Journey Canvas, Pain Points, Experience Opportunities | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | QualitativeResearchCustomerDiscovery | MVPValidationServiceDiscovery | JourneyCustomerService designCanvas | ValidationExperimentsDemandDiscovery |