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| Criterion |  Product Discovery Problem Interview |  UX Design Lean UX Canvas |  UX Research Surveys |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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. | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-60 min je Interview | 2-3 h | 3-14 Tage | 20-35 min |
Participantsdifferent | 5-12 Interviews | 3-8 | 50+ | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Completed Lean UX Canvas, Hypothesis list, First experiment | Survey Results, Charts, Segment Insights | Test Card with a pre-set threshold |
Tagsno overlap | DiscoveryInterviewsValidation | CanvasHypothesisOutcomesDiscovery | QuantitativeResearchValidation | ExperimentsValidationDiscoveryHypothesis |