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| Criterion |  Architecture C4 Model |  Engineering Goal Question Metric |  Architecture Architecture Decision Record |
|---|---|---|---|
Purposedifferent | 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. | Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 1-4 h | 90-180 min | 15-45 min |
Participantsdifferent | 1-5 | 3-6 | 1-3 |
Formatdifferent | Workshop + async | Workshop | Async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | GQM Table, Metric Profiles | ADR File, Decision Log, Rationale |
Tagsno overlap | ArchitectureCommunicationVisualization | MetricsMeasurementEngineeringAlignment | ArchitectureRationaleDocumentationGovernance |
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