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| Criterion |  Product Discovery Solution Interview |  Innovation Design Thinking |  UX Research Card Sorting |
|---|---|---|---|
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 content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 30-60 min je Interview | 1 Tag bis mehrere Wochen | 20-45 min |
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 | Content groups, Label set, IA hypotheses |
Tagsno overlap | ValidationInterviewsPrototype | InnovationPrototypeResearch | Information architectureNavigationStructure |
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