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| Criterion |  Operations 8D Problem Solving |  Growth Funnel Analysis |  Operations A3 Problem Solving |  Operations Kepner-Tregoe |
|---|---|---|---|---|
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 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 a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | High | Medium | Medium | High |
Timedifferent | 1-6 Wochen | 1-3 h | 45-90 min | 2-8 h |
Participantsdifferent | 4-10 | 1-5 | 2-5 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Funnel report, Drop-off analysis, Optimization hypotheses | A3 Report, Action Plan, Root Cause Analysis | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | QualityProblem solvingRoot cause | AnalyticsConversionGrowth | LeanProblem solvingCoachingOperations | Problem solvingRoot causeDecisionOperations |