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| Criterion |  Innovation Double Diamond |  UX Research Usability Testing |  Product Discovery Solution Interview |  Innovation Design Sprint |
|---|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | 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. | 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 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 | Medium | Medium | High |
Timedifferent | Wochen bis Monate | 1-2 h je Session | 30-60 min je Interview | 4-5 Tage |
Participantsdifferent | 3-12 | Based on research question | 5-10 Interviews | 5-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Usability Issues, Severity List, Recommendations | Solution Feedback, Objection List, Validation Notes | Prototype, Test Findings, Decision Rationale |
Tagsno overlap | ProcessDivergenceInnovation | ValidationUXPrototype | ValidationInterviewsPrototype | Design sprintPrototypeValidationInnovation |