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| Criterion |  Architecture Architecture Decision Record |  Product Discovery Assumption Mapping |  Architecture Architecture Communication Canvas |
|---|---|---|---|
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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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 | Medium | Medium |
Timedifferent | 15-45 min | 45-60 min | 60-120 min |
Participantsdifferent | 1-3 | 2-8 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Assumption map, Test backlog, Risk ranking | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | AssumptionsRiskExperimentsValidation | ArchitectureCommunicationStakeholdersCanvas |
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