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| Criterion |  Architecture C4 Model |  Facilitation Open Space Technology |  Architecture Architecture Decision Record |  Facilitation Barcamp |
|---|---|---|---|---|
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. | 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. | 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 many people can contribute knowledge and the flow should stay open, Barcamp provides a framework for self-organized sessions. The format channels energy without defining the content too narrowly in advance. |
Complexitydifferent | Low | High | Low | Medium |
Timedifferent | 1-4 h | 0.5-2 Tage | 15-45 min | Halber Tag bis 2 Tage |
Participantsdifferent | 1-5 | 20-500+ | 1-3 | 15-200 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Session Marketplace, Proceedings, Action Topics | ADR File, Decision Log, Rationale | Session Board, Session Notes, Community Learnings |
Tagsno overlap | ArchitectureCommunicationVisualization | FacilitationLarge groupAutonomy | ArchitectureRationaleDocumentationGovernance | FacilitationLarge groupLearning |