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| Criterion |  Architecture Architecture Decision Record |  Delivery Communication Plan |  Facilitation Expectation Mapping |
|---|---|---|---|
Purposedifferent | 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. | 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. | When roles, interfaces, or projects fail because of differing expectations, Expectation Mapping surfaces these differences. It shows what each side takes for granted and where the pictures diverge. |
Complexitysame | Low | Low | Low |
Timedifferent | 15-45 min | 45-90 min | 45-90 min |
Participantsdifferent | 1-3 | 2-6 | 3-12 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Communication Plan, Channel Matrix, Message Cadence | Expectation Map, Alignment Notes, Agreements |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | CommunicationStakeholdersDeliveryPlanning | AlignmentStakeholdersTeam |
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