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| Criterion |  Delivery Value Stream Mapping |  Product Discovery Smoke Test |  Product Discovery Assumption Mapping |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When delivery work dissolves into wait times, handoffs, and hidden effort, Value Stream Mapping makes the actual flow visible. The method exposes bottlenecks, idle time, and feedback loops so lead time and improvement levers become tangible. | 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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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 | Medium | Medium |
Timedifferent | 1-3 h | 1-5 Tage | 45-60 min | 1-5 Tage |
Participantsdifferent | 4-10 | Nutzertraffic | 2-8 | Nutzertraffic |
Formatdifferent | Workshop | Async | Workshop + async | Async |
Outputdifferent | Current-state map, Future-state map, Bottleneck list | Interest Metrics, Conversion Signal, Learning Note | Assumption map, Test backlog, Risk ranking | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LeanFlowWasteDelivery | ValidationExperimentsDemandGrowth | AssumptionsRiskExperimentsValidation | ValidationExperimentsDemandDiscovery |