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| Criterion |  Architecture Architecture Decision Record |  Agile 4Ls Retrospective |  Agile Start Stop Continue |  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. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | 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. | 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 15-45 min | 45–75 min | 30-60 min | 45-90 min |
Participantsdifferent | 1-3 | Team members involved | 3-12 | 4-12 |
Formatdifferent | Async | Workshop | Workshop | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | 4Ls Board, Learning Themes, Improvement Actions | Start Stop Continue Board, Improvement Actions | Starfish Board, Practice Changes, Experiments |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | RetrospectiveLearningReflectionTeam | RetrospectiveImprovementTeamReflection | RetrospectiveImprovementExperimentsTeam |