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| Criterion |  Operations DMAIC |  Operations PDCA Cycle |  Architecture arc42 |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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. |
Complexitydifferent | High | Low | Low | High |
Timedifferent | 2-12 Wochen | 1 h bis mehrere Wochen | 1-2 Tage | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 3-10 | 1-8 | 1-4 | Evaluation team, architects, and relevant stakeholders |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Architecture Document, Context View, Runtime View, Deployment View | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | Continuous improvementQualityProcess improvement | Continuous improvementLeanExperiments | ArchitectureDocumentationCommunication | ArchitectureQualityRiskTradeoffsStakeholders |