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| Criterion |  Operations After-Action Review |  Operations A3 Problem Solving |  Operations Pomodoro Technique |  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. | 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 easily distracted solo work, the method sets clear time boundaries for concentrated work. It protects attention when large tasks would otherwise fall apart into small avoidance moves. | 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 | Low |
Timedifferent | 20-45 min | 45-90 min | 25 min Zyklen | 30-120 min |
Participantsdifferent | 3-12 | 2-5 | 1 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Lessons learned, Action items, Event summary | A3 Report, Action Plan, Root Cause Analysis | Focus Sessions, Task Progress, Interruption Notes | Observation Notes, Improvement Ideas |
Tagsno overlap | LearningOperationsImprovement | LeanProblem solvingCoachingOperations | FocusTime managementProductivityExecution | LeanObservationProcessOperations |