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| Criterion |  Operations A3 Problem Solving |  Architecture C4 Model |  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. | 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. | 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 | 1-4 h | 1-6 Wochen |
Participantsdifferent | 2-5 | 1-5 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Context Diagram, Container Diagram, Component Diagram | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureCommunicationVisualization | QualityProblem solvingRoot cause |
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