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| Criterion |  Decision Making RAPID |  Architecture C4 Model |  Decision Making DACI |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
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. | 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. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 45-90 min | 1-4 h | 30-60 min | 60-120 min |
Participantsdifferent | 3-12 | 1-5 | 2-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | RAPID Role Map, Recommendation, Decision Log | Context Diagram, Container Diagram, Component Diagram | DACI Matrix, Decision Owner, Decision Log | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | DecisionRolesGovernance | ArchitectureCommunicationVisualization | DecisionRolesGovernanceAlignment | ArchitectureCommunicationStakeholdersCanvas |