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| Criterion |  Architecture C4 Model |  Decision Making Pre-Mortem |  Delivery Communication Plan |
|---|---|---|---|
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 early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. |
Complexitysame | Low | Low | Low |
Timedifferent | 1-4 h | 20–45 min | 45-90 min |
Participantsdifferent | 1-5 | Small cross-functional group | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Risk list, Mitigation plan, Assumption log | Communication Plan, Channel Matrix, Message Cadence |
Tagsno overlap | ArchitectureCommunicationVisualization | RiskDecisionFailurePlanning | CommunicationStakeholdersDeliveryPlanning |
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