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| Criterion |  UX Design Service Blueprinting |  Product Discovery Opportunity Interview |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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 opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | 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 | High | Medium | Low | Medium |
Timedifferent | 0.5-2 Tage | 30-60 min je Interview | 20-35 min | 1-5 Tage |
Participantsdifferent | 6-12 | 5-12 Interviews | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Async |
Outputdifferent | Service Blueprint, Fail Points, Ownership Map | Interview Notes, Opportunity Themes, Customer Quotes | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | Service designOperationsJourneyBlueprint | DiscoveryInterviewsOpportunityCustomer | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |