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| Criterion |  Operations Kaizen Event |  Innovation Double Diamond |  Operations 8D Problem Solving |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 | High | Medium |
Timedifferent | 0.5-5 Tage | Wochen bis Monate | 1-6 Wochen | 45-90 min |
Participantsdifferent | 4-10 | 3-12 | 4-10 | 2-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | LeanContinuous improvementOperations | ProcessDivergenceInnovation | QualityProblem solvingRoot cause | LeanProblem solvingCoachingOperations |