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| Criterion |  Operations Visual Management |  Operations Gemba Walk |  Operations After-Action Review |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | With high tempo and many parallel topics, the method makes status, deviations, and priorities visible at a glance. It reduces search effort and prevents what matters from getting lost in daily work. | 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. | 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. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | Ongoing | 30-120 min | 20-45 min | 45-90 min |
Participantsdifferent | 1-20 | 2-6 | 3-12 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Visual Board, Status Indicators, Exception Cues | Observation Notes, Improvement Ideas | Lessons learned, Action items, Event summary | A3 Report, Action Plan, Root Cause Analysis |
Tags1 shared | SignalsOperationsVisual management | LeanObservationProcessOperations | LearningOperationsImprovement | LeanProblem solvingCoachingOperations |