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| Criterion |  Operations After-Action Review |  Operations Bottleneck Analysis |  Operations A3 Problem Solving |  Operations Kaizen Event |
|---|---|---|---|---|
Purposedifferent | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | For a flow that backs up at one point, the method looks for the capacity limit with the greatest leverage. It explains why extra effort elsewhere barely improves throughput. | 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 tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 20-45 min | 1-3 h | 45-90 min | 0.5-5 Tage |
Participantsdifferent | 3-12 | 3-8 | 2-5 | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lessons learned, Action items, Event summary | Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures | A3 Report, Action Plan, Root Cause Analysis | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update |
Tagsno overlap | LearningOperationsImprovement | FlowMeasurementConstraints | LeanProblem solvingCoachingOperations | LeanContinuous improvementOperations |