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| Criterion |  Operations After-Action Review |  Operations Gemba Walk |  Operations Bottleneck Analysis |
|---|---|---|---|
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. | 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 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. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 20-45 min | 30-120 min | 1-3 h |
Participantsdifferent | 3-12 | 2-6 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Observation Notes, Improvement Ideas | Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures |
Tagsno overlap | LearningOperationsImprovement | LeanObservationProcessOperations | FlowMeasurementConstraints |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
