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| Criterion |  Architecture arc42 |  Architecture Architecture Decision Record |  Operations Change Analysis |  Architecture C4 Model |
|---|---|---|---|---|
Purposedifferent | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 1-2 Tage | 15-45 min | 45-120 min | 1-4 h |
Participantsdifferent | 1-4 | 1-3 | 2-6 | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Architecture Document, Context View, Runtime View, Deployment View | ADR File, Decision Log, Rationale | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | ArchitectureDocumentationCommunication | ArchitectureRationaleDocumentationGovernance | ChangeRoot causeTroubleshootingComparison | ArchitectureCommunicationVisualization |