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| Criterion |  Product Discovery Solution Interview |  Innovation Lean Startup |  UX Research Usability Testing |  Innovation Design Sprint |
|---|---|---|---|---|
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. | When the product question is unclear and time pressure is high, the method takes a team from an open idea to a testable solution. It connects problem understanding, decision, and learning in one compact format, lowering the risk of spending a lot of energy on a mere guess. |
Complexitydifferent | Medium | Medium | Medium | High |
Timedifferent | 30-60 min je Interview | Wochen bis Monate je Lernzyklus | 1-2 h je Session | 4-5 Tage |
Participantsdifferent | 5-10 Interviews | 2-8 | Based on research question | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Usability Issues, Severity List, Recommendations | Prototype, Test Findings, Decision Rationale |
Tags1 shared | ValidationInterviewsPrototype | LeanStartupValidationMVP | ValidationUXPrototype | Design sprintPrototypeValidationInnovation |