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| Criterion |  Product Discovery Solution Interview |  Innovation Design Thinking |  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 complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | 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. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 30-60 min je Interview | 1 Tag bis mehrere Wochen | 1-2 h je Session |
Participantsdifferent | 5-10 Interviews | 4-10 | Based on research question |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Problem Statement, Prototype, Test Learnings | Usability Issues, Severity List, Recommendations |
Tags1 shared | ValidationInterviewsPrototype | InnovationPrototypeResearch | ValidationUXPrototype |
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