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| Criterion |  Architecture C4 Model |  Architecture Request for Comments |  Delivery Communication Plan |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
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. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | 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 | Low | Medium | Low | Medium |
Timedifferent | 1-4 h | 1-3 Wochen vom Draft bis zur Entscheidung | 45-90 min | 60-120 min |
Participantsdifferent | 1-5 | 3-20 Reviewer | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Communication Plan, Channel Matrix, Message Cadence | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | ArchitectureCommunicationVisualization | ArchitectureDecisionAsyncGovernance | CommunicationStakeholdersDeliveryPlanning | ArchitectureCommunicationStakeholdersCanvas |