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| Criterion |  Product Discovery Solution Interview |  Innovation Lean Startup |  UX Research Usability Testing |
|---|---|---|---|
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. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 30-60 min je Interview | Wochen bis Monate je Lernzyklus | 1-2 h je Session |
Participantsdifferent | 5-10 Interviews | 2-8 | Based on research question |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Usability Issues, Severity List, Recommendations |
Tags1 shared | ValidationInterviewsPrototype | LeanStartupValidationMVP | ValidationUXPrototype |
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