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| Criterion |  Facilitation Lean Coffee |  Architecture C4 Model |  Architecture arc42 |  Facilitation Open Space Technology |
|---|---|---|---|---|
Purposedifferent | When a group without a fixed agenda needs to get into useful conversations quickly, Lean Coffee structures the start around interests rather than a presentation. The group itself negotiates which topics get time first and which wait. | 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. | 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 | Low | High |
Timedifferent | 30-90 min | 1-4 h | 1-2 Tage | 0.5-2 Tage |
Participantsdifferent | 3-20 | 1-5 | 1-4 | 20-500+ |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Prioritized Topics, Discussion Notes, Action Items | Context Diagram, Container Diagram, Component Diagram | Architecture Document, Context View, Runtime View, Deployment View | Session Marketplace, Proceedings, Action Topics |
Tagsno overlap | FacilitationAutonomyDialogue | ArchitectureCommunicationVisualization | ArchitectureDocumentationCommunication | FacilitationLarge groupAutonomy |