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| Criterion |  Operations Kaizen Event |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations PDCA Cycle |  Growth A/B Testing |
|---|---|---|---|---|
Purposedifferent | 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. | 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 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. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 0.5-5 Tage | 2–4 h review as a planning range; preparation and evaluation additional | 1 h bis mehrere Wochen | 1-4 Wochen |
Participantsdifferent | 4-10 | Designers, developers as users, and facilitation | 1-8 | 1-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Async |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Experiment results, Decision log, Learning summary |
Tagsno overlap | LeanContinuous improvementOperations | ArchitectureEngineeringFeedbackValidationTasks | Continuous improvementLeanExperiments | ExperimentsGrowthAnalyticsValidation |