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| Criterion |  Product Discovery Problem Interview |  Innovation Design Thinking |  UX Research User Interviews |  Innovation Design Sprint |
|---|---|---|---|---|
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. | 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 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. | 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 | High | Low | High |
Timedifferent | 30-60 min je Interview | 1 Tag bis mehrere Wochen | 30–60 min per interview | 4-5 Tage |
Participantsdifferent | 5-12 Interviews | 4-10 | 1 participant per interview | 5-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Problem Evidence, Risk Notes, Customer Segments | Problem Statement, Prototype, Test Learnings | Interview Notes, Themes, Insight Summary | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | DiscoveryInterviewsValidation | InnovationPrototypeResearch | QualitativeResearchCustomerDiscovery | Design sprintPrototypeValidationInnovation |