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| Criterion |  Product Discovery Solution Interview |  Operations Gemba Walk |  Innovation Design Thinking |  Innovation Double Diamond |
|---|---|---|---|---|
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. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | 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. | 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. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 30-60 min je Interview | 30-120 min | 1 Tag bis mehrere Wochen | Wochen bis Monate |
Participantsdifferent | 5-10 Interviews | 2-6 | 4-10 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Observation Notes, Improvement Ideas | Problem Statement, Prototype, Test Learnings | Problem Statement, Solution Options, Prototypes, Deliverables per Phase |
Tagsno overlap | ValidationInterviewsPrototype | LeanObservationProcessOperations | InnovationPrototypeResearch | ProcessDivergenceInnovation |