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| Criterion |  Operations After-Action Review |  Agile Affinity Estimation |  Operations Gemba Walk |
|---|---|---|---|
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 many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 20-45 min | 30-90 min | 30-120 min |
Participantsdifferent | 3-12 | 3-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Lessons learned, Action items, Event summary | Affinity Size Map, Grouped Estimates, Unclear Items | Observation Notes, Improvement Ideas |
Tagsno overlap | LearningOperationsImprovement | EstimationBacklogRelative sizing | LeanObservationProcessOperations |
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