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 Gemba Walk |  Growth A/B Testing |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | Low | High | Low | Medium |
Timedifferent | 30-120 min | 1-4 Wochen | 25-40 min | 1-5 Tage |
Participantsdifferent | 2-6 | 1-6 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Async | Workshop + async | Async |
Outputdifferent | Observation Notes, Improvement Ideas | Experiment results, Decision log, Learning summary | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | LeanObservationProcessOperations | ExperimentsGrowthAnalyticsValidation | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |