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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Causal Factor Analysis |
|---|---|---|
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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitysame | High | High |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 2-6 h |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 3-10 |
Formatsame | 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 | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | CausalityIncidentRoot causeTimeline |
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