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| Criterion |  UX Research User Interviews |  Product Discovery Opportunity Solution Tree |  UX Design Lean UX Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
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 discovery keeps swinging between goals, ideas, and learning loops, it creates clear steering logic. It connects the desired outcome, opportunities, and experiments into a legible structure. | The Lean UX Canvas helps clarify user behavior, touchpoints, and concept decisions. It makes assumptions and desired outcomes visible and captures the result as a completed canvas, hypothesis list, and first experiment. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30–60 min per interview | 1-2 h Setup, laufend | 2-3 h | 20-35 min |
Participantsdifferent | 1 participant per interview | 2-6 | 3-8 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Opportunity Solution Tree, Experiment Backlog, Learning Log | Completed Lean UX Canvas, Hypothesis list, First experiment | Test Card with a pre-set threshold |
Tags1 shared | QualitativeResearchCustomerDiscovery | DiscoveryOutcomesExperimentsOpportunity | CanvasHypothesisOutcomesDiscovery | ExperimentsValidationDiscoveryHypothesis |