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| Criterion |  Architecture C4 Model |  Architecture Architecture Decision Record |  Facilitation Open Space Technology |
|---|---|---|---|
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. | 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. | When a complex topic does not yet have a fitting agenda, Open Space Technology hands topic ownership back to the participants. The format suits questions that only move forward when real interest determines the order. |
Complexitydifferent | Low | Low | High |
Timedifferent | 1-4 h | 15-45 min | 0.5-2 Tage |
Participantsdifferent | 1-5 | 1-3 | 20-500+ |
Formatdifferent | Workshop + async | Async | Workshop |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | ADR File, Decision Log, Rationale | Session Marketplace, Proceedings, Action Topics |
Tagsno overlap | ArchitectureCommunicationVisualization | ArchitectureRationaleDocumentationGovernance | FacilitationLarge groupAutonomy |
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