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| Criterion |  Decision Making RAPID |  Architecture C4 Model |  Architecture Architecture Communication Canvas |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | In complex management decisions, clarity is often missing about who recommends, who agrees, and who makes the decision. RAPID creates this assignment and stabilizes decisions across several levels. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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 | Medium | Low | Medium | Low |
Timedifferent | 45-90 min | 1-4 h | 60-120 min | 15-45 min |
Participantsdifferent | 3-12 | 1-5 | 2-8 | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | RAPID Role Map, Recommendation, Decision Log | Context Diagram, Container Diagram, Component Diagram | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | ADR File, Decision Log, Rationale |
Tagsno overlap | DecisionRolesGovernance | ArchitectureCommunicationVisualization | ArchitectureCommunicationStakeholdersCanvas | ArchitectureRationaleDocumentationGovernance |