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| Criterion |  Product Discovery Solution Interview |  UX Research Usability Testing |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | When a product is built but people get stuck on tasks, usability testing shows the friction at concrete points. Observed use instead of self-report makes visible where orientation, understanding, or interaction breaks down. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 30-60 min je Interview | 1-2 h je Session | 30-60 min | 20-35 min |
Participantsdifferent | 5-10 Interviews | Based on research question | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Usability Issues, Severity List, Recommendations | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tags1 shared | ValidationInterviewsPrototype | ValidationUXPrototype | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |