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| Criterion |  Operations A3 Problem Solving |  Operations Kaizen Event |  Architecture C4 Model |
|---|---|---|---|
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. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. |
Complexitydifferent | Medium | Medium | Low |
Timedifferent | 45-90 min | 0.5-5 Tage | 1-4 h |
Participantsdifferent | 2-5 | 4-10 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | LeanProblem solvingCoachingOperations | LeanContinuous improvementOperations | ArchitectureCommunicationVisualization |
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