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| Criterion |  Decision Making Pre-Mortem |  Delivery Communication Plan |  Architecture C4 Model |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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 | Low | Low | Medium |
Timedifferent | 20–45 min | 45-90 min | 1-4 h | 60-120 min |
Participantsdifferent | Small cross-functional group | 2-6 | 1-5 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Communication Plan, Channel Matrix, Message Cadence | Context Diagram, Container Diagram, Component Diagram | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | RiskDecisionFailurePlanning | CommunicationStakeholdersDeliveryPlanning | ArchitectureCommunicationVisualization | ArchitectureCommunicationStakeholdersCanvas |