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| Criterion |  Operations Kaizen Event |  Product Discovery Assumption Mapping |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations PDCA Cycle |
|---|---|---|---|---|
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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | 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 | Medium | Medium | High | Low |
Timedifferent | 0.5-5 Tage | 45-60 min | Several meetings plus preparation and analysis; total effort depends on scope | 1 h bis mehrere Wochen |
Participantsdifferent | 4-10 | 2-8 | Evaluation team, architects, and relevant stakeholders | 1-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Assumption map, Test backlog, Risk ranking | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | PDCA Log, Experiment Plan, Learning Outcome, Standard Change |
Tagsno overlap | LeanContinuous improvementOperations | AssumptionsRiskExperimentsValidation | ArchitectureQualityRiskTradeoffsStakeholders | Continuous improvementLeanExperiments |