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| Criterion |  Innovation Design Sprint |  Operations PDCA Cycle |  Product Discovery Smoke Test |  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 improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. | 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 | 4-5 Tage | 1 h bis mehrere Wochen | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 5-8 | 1-8 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop | Workshop + async | Async | Async |
Outputdifferent | Prototype, Test Findings, Decision Rationale | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | Design sprintPrototypeValidationInnovation | Continuous improvementLeanExperiments | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |