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| Criterion |  Architecture Architecture Decision Record |  Facilitation Lean Coffee |  Facilitation World Café |  Architecture arc42 |
|---|---|---|---|---|
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. | 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. | When a group needs to connect many viewpoints in a short time, World Café creates a calm alternation between closeness and rotation. It sets thinking in motion without forcing the conversation into full-plenary rigidity. | 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. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 15-45 min | 30-90 min | 60-180 min | 1-2 Tage |
Participantsdifferent | 1-3 | 3-20 | 12-100+ | 1-4 |
Formatdifferent | Async | Workshop | Workshop | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Prioritized Topics, Discussion Notes, Action Items | Table Notes, Emergent Themes, Shared Questions | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | FacilitationAutonomyDialogue | FacilitationDialogueLarge groupSensemaking | ArchitectureDocumentationCommunication |