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| Criterion |  Architecture Architecture Decision Record |  Architecture Architecture Communication Canvas |  Operations RACI Matrix |
|---|---|---|---|
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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | With unclear responsibilities across several roles or areas, the method creates unambiguous accountability logic. It reduces friction because decision, execution, contribution, and information become separately visible. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 15-45 min | 60-120 min | 45-90 min |
Participantsdifferent | 1-3 | 2-8 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | RACI Matrix, Responsibility Map, Decision Notes |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationStakeholdersCanvas | RolesResponsibilityGovernanceOperations |
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