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| Criterion |  Operations A3 Problem Solving |  Operations Ivy Lee Method |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | 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. | 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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Medium | Low | High |
Timedifferent | 45-90 min | 5-10 min daily | 1-6 Wochen |
Participantsdifferent | 2-5 | 1 | 4-10 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Daily Priority List, Completion Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | LeanProblem solvingCoachingOperations | PrioritizationProductivityExecution | QualityProblem solvingRoot cause |
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