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| Criterion |  Architecture Architecture Decision Record |  Systems Thinking VUCA Scan |  Architecture C4 Model |
|---|---|---|---|
Purposedifferent | 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. | The VUCA Scan helps read difficult situations more precisely. Instead of treating unclarity as generally complicated, the method separates fast change, missing knowledge, systemic entanglement, and ambiguous interpretation. | 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. |
Complexitysame | Low | Low | Low |
Timedifferent | 15-45 min | 30-90 min | 1-4 h |
Participantsdifferent | 1-3 | 1-10 | 1-5 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | VUCA Map, Response Options, Signal and Learning Plan | Context Diagram, Container Diagram, Component Diagram |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | SensemakingUncertaintyComplexityStrategyForesight | ArchitectureCommunicationVisualization |
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