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| Criterion |  Product Discovery Problem Interview |  Product Discovery Solution Interview |  UX Research User Interviews |  Innovation Design Thinking |
|---|---|---|---|---|
Purposedifferent | 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. | 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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 30-60 min je Interview | 30-60 min je Interview | 30–60 min per interview | 1 Tag bis mehrere Wochen |
Participantsdifferent | 5-12 Interviews | 5-10 Interviews | 1 participant per interview | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Solution Feedback, Objection List, Validation Notes | Interview Notes, Themes, Insight Summary | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | DiscoveryInterviewsValidation | ValidationInterviewsPrototype | QualitativeResearchCustomerDiscovery | InnovationPrototypeResearch |