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| Criterion |  Growth A/B Testing |  Operations Gemba Walk |  Product Discovery Test Card |
|---|---|---|---|
Purposedifferent | 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. | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | High | Low | Low |
Timedifferent | 1-4 Wochen | 30-120 min | 20-35 min |
Participantsdifferent | 1-6 | 2-6 | 1-5 |
Formatdifferent | Async | Workshop | Workshop + async |
Outputdifferent | Experiment results, Decision log, Learning summary | Observation Notes, Improvement Ideas | Test Card with a pre-set threshold |
Tagsno overlap | ExperimentsGrowthAnalyticsValidation | LeanObservationProcessOperations | ExperimentsValidationDiscoveryHypothesis |
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