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| Criterion |  Operations A3 Problem Solving |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Decision Matrix |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. | When several options collide with several criteria, comparison quickly becomes subjective. A Decision Matrix makes the trade-off visible and brings weighting, criteria, and options into a shared logic. | 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. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 2-8 h |
Participantsdifferent | 2-5 | Evaluation team, architects, and relevant stakeholders | 2-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Decision Matrix, Scoring Rationale, Selected Option | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureQualityRiskTradeoffsStakeholders | DecisionCriteriaScoringTradeoffs | Problem solvingRoot causeDecisionOperations |