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| Criterion |  Architecture C4 Model |  Delivery Communication Plan |  Decision Making Assumption Surfacing |
|---|---|---|---|
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. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitysame | Low | Low | Low |
Timedifferent | 1-4 h | 45-90 min | 45-90 min |
Participantsdifferent | 1-5 | 2-6 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Communication Plan, Channel Matrix, Message Cadence | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ArchitectureCommunicationVisualization | CommunicationStakeholdersDeliveryPlanning | AssumptionsRiskDecisionDiscovery |
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