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Selected:A3 Problem SolvingARID (Active Reviews for Intermediate Designs)Starfish RetrospectiveSailboat Retrospective
| Criterion |  Operations A3 Problem Solving |  Architecture ARID (Active Reviews for Intermediate Designs) |  Agile Starfish Retrospective |  Agile Sailboat Retrospective |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | 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 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 45-90 min | 2–4 h review as a planning range; preparation and evaluation additional | 45-90 min | 45-90 min |
Participantsdifferent | 2-5 | Designers, developers as users, and facilitation | 4-12 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Starfish Board, Practice Changes, Experiments | Sailboat Board, Risks, Improvement Actions |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureEngineeringFeedbackValidationTasks | RetrospectiveImprovementExperimentsTeam | RetrospectiveTeamImprovement |