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| Criterion |  Operations Gemba Walk |  Operations A3 Problem Solving |  Growth Funnel Analysis |  Growth A/B Testing |
|---|---|---|---|---|
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. | 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. | When many visitors or users drop off along the way, the reason behind the number often stays hidden. Funnel Analysis exposes these transitions and makes visible exactly where the path collapses. | 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. |
Complexitydifferent | Low | Medium | Medium | High |
Timedifferent | 30-120 min | 45-90 min | 1-3 h | 1-4 Wochen |
Participantsdifferent | 2-6 | 2-5 | 1-5 | 1-6 |
Formatdifferent | Workshop | Workshop + async | Async | Async |
Outputdifferent | Observation Notes, Improvement Ideas | A3 Report, Action Plan, Root Cause Analysis | Funnel report, Drop-off analysis, Optimization hypotheses | Experiment results, Decision log, Learning summary |
Tagsno overlap | LeanObservationProcessOperations | LeanProblem solvingCoachingOperations | AnalyticsConversionGrowth | ExperimentsGrowthAnalyticsValidation |