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| Criterion |  Delivery Communication Plan |  Architecture Architecture Decision Record |  Delivery Cost of Delay |
|---|---|---|---|
Purposedifferent | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. |
Complexitydifferent | Low | Low | High |
Timedifferent | 45-90 min | 15-45 min | 90-180 min |
Participantsdifferent | 2-6 | 1-3 | 3-8 |
Formatdifferent | Workshop + async | Async | Workshop |
Outputdifferent | Communication Plan, Channel Matrix, Message Cadence | ADR File, Decision Log, Rationale | CoD Table, Prioritization Sequence |
Tagsno overlap | CommunicationStakeholdersDeliveryPlanning | ArchitectureRationaleDocumentationGovernance | PrioritizationDeliveryEconomicsDecision |
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