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| Criterion |  Operations Kepner-Tregoe |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Change Analysis |  Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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 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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | High | High | Medium | Low |
Timedifferent | 2-8 h | Several meetings plus preparation and analysis; total effort depends on scope | 45-120 min | 30-60 min |
Participantsdifferent | 2-8 | Evaluation team, architects, and relevant stakeholders | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Analysis, Decision Analysis, Risk Plan | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | Problem solvingRoot causeDecisionOperations | ArchitectureQualityRiskTradeoffsStakeholders | ChangeRoot causeTroubleshootingComparison | Root causeQualityOperations |