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| Criterion |  Operations Change Analysis |  Architecture C4 Model |  Architecture arc42 |
|---|---|---|---|
Purposedifferent | 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. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 45-120 min | 1-4 h | 1-2 Tage |
Participantsdifferent | 2-6 | 1-5 | 1-4 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Context Diagram, Container Diagram, Component Diagram | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | ArchitectureCommunicationVisualization | ArchitectureDocumentationCommunication |
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