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| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations After-Action Review |  Operations Kaizen Event |  Operations Gemba Walk |
|---|---|---|---|---|
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. | 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 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. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 20-45 min | 0.5-5 Tage | 30-120 min |
Participantsdifferent | Designers, developers as users, and facilitation | 3-12 | 4-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Lessons learned, Action items, Event summary | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Observation Notes, Improvement Ideas |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | LearningOperationsImprovement | LeanContinuous improvementOperations | LeanObservationProcessOperations |