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| Criterion |  Innovation Lean Startup |  Product Discovery Solution Interview |  Product Discovery Fake Door Test |  Product Discovery Pretotyping |
|---|---|---|---|---|
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. | 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 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. | 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | Wochen bis Monate je Lernzyklus | 30-60 min je Interview | 1-5 Tage | Stunden bis wenige Tage |
Participantsdifferent | 2-8 | 5-10 Interviews | Nutzertraffic | 1-4 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Solution Feedback, Objection List, Validation Notes | Click Data, Interest Signal, Learning Decision | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision |
Tags1 shared | LeanStartupValidationMVP | ValidationInterviewsPrototype | ValidationExperimentsDemandDiscovery | ValidationDemandMVP |