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| Criterion |  UX Design Service Blueprinting |  UX Research User Interviews |  Product Discovery Fake Door Test |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | When a service experience is spread across several touchpoints, it brings frontstage and backstage together. It shows where user contact and internal responsibility must fit. | 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 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 | High | Low | Medium | Medium |
Timedifferent | 0.5-2 Tage | 30–60 min per interview | 1-5 Tage | 45-75 min |
Participantsdifferent | 6-12 | 1 participant per interview | Nutzertraffic | 2-8 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop |
Outputdifferent | Service Blueprint, Fail Points, Ownership Map | Interview Notes, Themes, Insight Summary | Click Data, Interest Signal, Learning Decision | Test Matrix, Test Plan |
Tagsno overlap | Service designOperationsJourneyBlueprint | QualitativeResearchCustomerDiscovery | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryOptions |