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| Criterion |  Architecture arc42 |  Agile Sailboat Retrospective |  Architecture Architecture Decision Record |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | When a team wants to read momentum, brakes, and risks together, it offers an easily understandable picture of the situation. It makes drive, obstacles, and headwind visible in the same picture. | 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 1-2 Tage | 45-90 min | 15-45 min | 45–75 min |
Participantsdifferent | 1-4 | 4-12 | 1-3 | Team members involved |
Formatdifferent | Workshop + async | Workshop | Async | Workshop |
Outputdifferent | Architecture Document, Context View, Runtime View, Deployment View | Sailboat Board, Risks, Improvement Actions | ADR File, Decision Log, Rationale | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | ArchitectureDocumentationCommunication | RetrospectiveTeamImprovement | ArchitectureRationaleDocumentationGovernance | RetrospectiveLearningReflectionTeam |