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| Criterion |  Product Discovery Solution Interview |  Innovation Design Thinking |  UX Research Surveys |  Product Discovery Problem Interview |
|---|---|---|---|---|
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 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. | 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. |
Complexitydifferent | Medium | High | Medium | Medium |
Timedifferent | 30-60 min je Interview | 1 Tag bis mehrere Wochen | 3-14 Tage | 30-60 min je Interview |
Participantsdifferent | 5-10 Interviews | 4-10 | 50+ | 5-12 Interviews |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Problem Statement, Prototype, Test Learnings | Survey Results, Charts, Segment Insights | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ValidationInterviewsPrototype | InnovationPrototypeResearch | QuantitativeResearchValidation | DiscoveryInterviewsValidation |