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| Criterion |  Operations DMAIC |  Architecture C4 Model |  Operations Change Analysis |
|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come 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 a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. |
Complexitydifferent | High | Low | Medium |
Timedifferent | 2-12 Wochen | 1-4 h | 45-120 min |
Participantsdifferent | 3-10 | 1-5 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Context Diagram, Container Diagram, Component Diagram | Change Matrix, Cause Hypotheses, Validation Questions, Action List |
Tagsno overlap | Continuous improvementQualityProcess improvement | ArchitectureCommunicationVisualization | ChangeRoot causeTroubleshootingComparison |
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