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| Criterion |  Operations A3 Problem Solving |  Product Discovery Fake Door Test |  Innovation Lean Startup |  Product Discovery MVP Test Matrix |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. | 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 several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 45-90 min | 1-5 Tage | Wochen bis Monate je Lernzyklus | 45-75 min |
Participantsdifferent | 2-5 | Nutzertraffic | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Click Data, Interest Signal, Learning Decision | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Test Matrix, Test Plan |
Tagsno overlap | LeanProblem solvingCoachingOperations | ValidationExperimentsDemandDiscovery | LeanStartupValidationMVP | ExperimentsValidationDiscoveryOptions |