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Selected:Sprint RetrospectiveARID (Active Reviews for Intermediate Designs)Assumption MappingStarfish Retrospective
| Criterion |  Agile Sprint Retrospective |  Architecture ARID (Active Reviews for Intermediate Designs) |  Product Discovery Assumption Mapping |  Agile Starfish Retrospective |
|---|---|---|---|---|
Purposedifferent | When a sprint is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes 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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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 | Medium | Low |
Timedifferent | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 2–4 h review as a planning range; preparation and evaluation additional | 45-60 min | 45-90 min |
Participantsdifferent | Scrum Team | Designers, developers as users, and facilitation | 2-8 | 4-12 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Improvement actions, Team agreements | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Assumption map, Test backlog, Risk ranking | Starfish Board, Practice Changes, Experiments |
Tagsno overlap | RetrospectiveImprovementLearning | ArchitectureEngineeringFeedbackValidationTasks | AssumptionsRiskExperimentsValidation | RetrospectiveImprovementExperimentsTeam |