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| Criterion |  Architecture Architecture Decision Record |  Architecture Architecture Communication Canvas |  Agile Starfish Retrospective |
|---|---|---|---|
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. | When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 15-45 min | 60-120 min | 45-90 min |
Participantsdifferent | 1-3 | 2-8 | 4-12 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Starfish Board, Practice Changes, Experiments |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationStakeholdersCanvas | RetrospectiveImprovementExperimentsTeam |
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