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| Criterion |  Operations 8D Problem Solving |  Growth Funnel Analysis |  Operations Root Cause Tree Analysis |  Growth A/B Testing |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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 | High | Medium | Medium | High |
Timedifferent | 1-6 Wochen | 1-3 h | 1-3 h | 1-4 Wochen |
Participantsdifferent | 4-10 | 1-5 | 2-8 | 1-6 |
Formatdifferent | Workshop + async | Async | Workshop | Async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Funnel report, Drop-off analysis, Optimization hypotheses | Cause Tree, Evidence Notes, Countermeasures | Experiment results, Decision log, Learning summary |
Tagsno overlap | QualityProblem solvingRoot cause | AnalyticsConversionGrowth | Root causeTreeIncidentQuality | ExperimentsGrowthAnalyticsValidation |