View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Operations A3 Problem Solving |  Operations PDCA Cycle |  Product Discovery Smoke Test |  Product Discovery Fake Door Test |
|---|---|---|---|---|
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. | 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 | Medium | Low | Low | Medium |
Timedifferent | 45-90 min | 1 h bis mehrere Wochen | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 2-5 | 1-8 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LeanProblem solvingCoachingOperations | Continuous improvementLeanExperiments | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |