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| Criterion |  Decision Making Pre-Mortem |  Delivery Communication Plan |  Architecture Architecture Communication Canvas |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
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 Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 20–45 min | 45-90 min | 60-120 min | 45-90 min |
Participantsdifferent | Small cross-functional group | 2-6 | 2-8 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Communication Plan, Channel Matrix, Message Cadence | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | RiskDecisionFailurePlanning | CommunicationStakeholdersDeliveryPlanning | ArchitectureCommunicationStakeholdersCanvas | AssumptionsRiskDecisionDiscovery |