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| Criterion |  Operations DMAIC |  Product Strategy ICE Scoring |  Product Discovery Smoke Test |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | When ideas need sorting quickly, it condenses impact, confidence, and effort into one compact score. It connects customer value, product logic, and decision priorities. The result is captured as an ICE table and top-ideas list. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | 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 | Low | Low | Medium |
Timedifferent | 2-12 Wochen | 30-60 min | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 3-10 | 2-8 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | ICE Table, Top Idea List | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | Continuous improvementQualityProcess improvement | PrioritizationScoringGrowthDecision | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |