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| Criterion |  Product Discovery Opportunity Solution Tree |  UX Research User Interviews |  Product Discovery Test Card |  UX Design Lean UX Canvas |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 1-2 h Setup, laufend | 30–60 min per interview | 20-35 min | 2-3 h |
Participantsdifferent | 2-6 | 1 participant per interview | 1-5 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Opportunity Solution Tree, Experiment Backlog, Learning Log | Interview Notes, Themes, Insight Summary | Test Card with a pre-set threshold | Completed Lean UX Canvas, Hypothesis list, First experiment |
Tags1 shared | DiscoveryOutcomesExperimentsOpportunity | QualitativeResearchCustomerDiscovery | ExperimentsValidationDiscoveryHypothesis | CanvasHypothesisOutcomesDiscovery |