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| Criterion |  Operations Gemba Walk |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations Kaizen Event |  Operations PDCA Cycle |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | For an improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30-120 min | 2–4 h review as a planning range; preparation and evaluation additional | 0.5-5 Tage | 1 h bis mehrere Wochen |
Participantsdifferent | 2-6 | Designers, developers as users, and facilitation | 4-10 | 1-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | 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 | PDCA Log, Experiment Plan, Learning Outcome, Standard Change |
Tagsno overlap | LeanObservationProcessOperations | ArchitectureEngineeringFeedbackValidationTasks | LeanContinuous improvementOperations | Continuous improvementLeanExperiments |