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Selected:ARID (Active Reviews for Intermediate Designs)Sprint RetrospectiveAfter-Action Review4Ls Retrospective
| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Agile Sprint Retrospective |  Operations After-Action Review |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | 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 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. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 20-45 min | 45–75 min |
Participantsdifferent | Designers, developers as users, and facilitation | Scrum Team | 3-12 | Team members involved |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Improvement actions, Team agreements | Lessons learned, Action items, Event summary | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | RetrospectiveImprovementLearning | LearningOperationsImprovement | RetrospectiveLearningReflectionTeam |