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| Criterion |  Architecture Architecture Decision Record |  Architecture C4 Model |  Agile Starfish Retrospective |  Agile Start Stop Continue |
|---|---|---|---|---|
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 C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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. | When a team wants to deliberately adjust its working behavior, it makes habits visible and assessable. It focuses on concrete changes instead of diffuse mood. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 15-45 min | 1-4 h | 45-90 min | 30-60 min |
Participantsdifferent | 1-3 | 1-5 | 4-12 | 3-12 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Context Diagram, Container Diagram, Component Diagram | Starfish Board, Practice Changes, Experiments | Start Stop Continue Board, Improvement Actions |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationVisualization | RetrospectiveImprovementExperimentsTeam | RetrospectiveImprovementTeamReflection |