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| Criterion |  UX Design Customer Journey Canvas |  UX Research User Interviews |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | 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 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | 1-3 h | 30–60 min per interview | 20-35 min | 1-5 Tage |
Participantsdifferent | 3-10 | 1 participant per interview | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Async |
Outputdifferent | Customer Journey Canvas, Pain Points, Experience Opportunities | Interview Notes, Themes, Insight Summary | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | JourneyCustomerService designCanvas | QualitativeResearchCustomerDiscovery | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |