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| Criterion |  Innovation Design Sprint |  Operations 8D Problem Solving |  Product Discovery MVP Test Matrix |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | 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 | High | High | Medium | Medium |
Timedifferent | 4-5 Tage | 1-6 Wochen | 45-75 min | 1-5 Tage |
Participantsdifferent | 5-8 | 4-10 | 2-8 | Nutzertraffic |
Formatdifferent | Workshop | Workshop + async | Workshop | Async |
Outputdifferent | Prototype, Test Findings, Decision Rationale | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Test Matrix, Test Plan | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | Design sprintPrototypeValidationInnovation | QualityProblem solvingRoot cause | ExperimentsValidationDiscoveryOptions | ValidationExperimentsDemandDiscovery |