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Selected:DMAICAssumption SurfacingSoftware Architecture CanvasATAM (Architecture Tradeoff Analysis Method)
| Criterion |  Operations DMAIC |  Decision Making Assumption Surfacing |  Architecture Software Architecture Canvas |  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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | The Software Architecture Canvas reduces a system to the most important architecture decisions, constraints, and interfaces. It is useful when teams need a resilient overall picture quickly. | 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 | 45-90 min | 1-2 h | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 3-10 | 2-8 | 3-10 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Assumption List, Critical Assumptions, Learning Plan | Architecture Canvas, Goals, Constraints, Quality Attributes | 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 | AssumptionsRiskDecisionDiscovery | CanvasArchitectureAlignmentWorkshop | ArchitectureQualityRiskTradeoffsStakeholders |