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Selected:ATAM (Architecture Tradeoff Analysis Method)Assumption SurfacingChange Analysis8D Problem Solving
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Assumption Surfacing |  Operations Change Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. |
Complexitydifferent | High | Low | Medium | High |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 45-120 min | 1-6 Wochen |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-8 | 2-6 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Assumption List, Critical Assumptions, Learning Plan | Change Matrix, Cause Hypotheses, Validation Questions, Action List | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | AssumptionsRiskDecisionDiscovery | ChangeRoot causeTroubleshootingComparison | QualityProblem solvingRoot cause |