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