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Selected:ARID (Active Reviews for Intermediate Designs)Kaizen EventAfter-Action ReviewA3 Problem Solving
| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations Kaizen Event |  Operations After-Action Review |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 0.5-5 Tage | 20-45 min | 45-90 min |
Participantsdifferent | Designers, developers as users, and facilitation | 4-10 | 3-12 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Lessons learned, Action items, Event summary | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | LeanContinuous improvementOperations | LearningOperationsImprovement | LeanProblem solvingCoachingOperations |