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| Criterion |  Facilitation Lean Coffee |  Decision Making Argument Mapping |  Architecture C4 Model |  Architecture Architecture Decision Record |
|---|---|---|---|---|
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. | When statements, evidence, and counterarguments get mixed up, a debate quickly loses its structure. Argument Mapping breaks a thesis down into its reasoning and makes visible what it really rests on. | 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. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 30-90 min | 1-3 h | 1-4 h | 15-45 min |
Participantsdifferent | 3-20 | 1-8 | 1-5 | 1-3 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Async |
Outputdifferent | Prioritized Topics, Discussion Notes, Action Items | Argument Map, Evidence Gaps, Decision Rationale | Context Diagram, Container Diagram, Component Diagram | ADR File, Decision Log, Rationale |
Tagsno overlap | FacilitationAutonomyDialogue | SensemakingDecisionRationale | ArchitectureCommunicationVisualization | ArchitectureRationaleDocumentationGovernance |