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| Criterion |  Operations Visual Management |  Operations Gemba Walk |  Operations Ivy Lee Method |  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. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | 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 | 5-10 min daily | 45-90 min |
Participantsdifferent | 1-20 | 2-6 | 1 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Visual Board, Status Indicators, Exception Cues | Observation Notes, Improvement Ideas | Daily Priority List, Completion Notes | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | SignalsOperationsVisual management | LeanObservationProcessOperations | PrioritizationProductivityExecution | LeanProblem solvingCoachingOperations |