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| Criterion |  Architecture Architecture Decision Record |  Architecture arc42 |  Facilitation Open Space Technology |
|---|---|---|---|
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. | 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. | 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 | 15-45 min | 1-2 Tage | 0.5-2 Tage |
Participantsdifferent | 1-3 | 1-4 | 20-500+ |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Architecture Document, Context View, Runtime View, Deployment View | Session Marketplace, Proceedings, Action Topics |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureDocumentationCommunication | FacilitationLarge groupAutonomy |
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