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| Criterion |  Architecture C4 Model |  Decision Making DACI |  Architecture Architecture Communication Canvas |  Decision Making RAPID |
|---|---|---|---|---|
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. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 1-4 h | 30-60 min | 60-120 min | 45-90 min |
Participantsdifferent | 1-5 | 2-10 | 2-8 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | DACI Matrix, Decision Owner, Decision Log | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | RAPID Role Map, Recommendation, Decision Log |
Tagsno overlap | ArchitectureCommunicationVisualization | DecisionRolesGovernanceAlignment | ArchitectureCommunicationStakeholdersCanvas | DecisionRolesGovernance |