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| Criterion |  Innovation Lean Startup |  Product Discovery Pretotyping |  Operations Gemba Walk |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. | 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. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | Wochen bis Monate je Lernzyklus | Stunden bis wenige Tage | 30-120 min | 1-5 Tage |
Participantsdifferent | 2-8 | 1-4 | 2-6 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Async |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | Observation Notes, Improvement Ideas | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LeanStartupValidationMVP | ValidationDemandMVP | LeanObservationProcessOperations | ValidationExperimentsDemandDiscovery |