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| Criterion |  Operations Kepner-Tregoe |  Operations A3 Problem Solving |  Delivery Value Stream Mapping |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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. | 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 delivery work dissolves into wait times, handoffs, and hidden effort, Value Stream Mapping makes the actual flow visible. The method exposes bottlenecks, idle time, and feedback loops so lead time and improvement levers become tangible. | 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. |
Complexitydifferent | High | Medium | Medium | High |
Timedifferent | 2-8 h | 45-90 min | 1-3 h | 1-6 Wochen |
Participantsdifferent | 2-8 | 2-5 | 4-10 | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Problem Analysis, Decision Analysis, Risk Plan | A3 Report, Action Plan, Root Cause Analysis | Current-state map, Future-state map, Bottleneck list | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Problem solvingRoot causeDecisionOperations | LeanProblem solvingCoachingOperations | LeanFlowWasteDelivery | QualityProblem solvingRoot cause |