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| Criterion |  Architecture Quality Attribute Workshop |  Operations Causal Factor Analysis |  Operations Barrier Analysis |
|---|---|---|---|
Purposedifferent | A Quality Attribute Workshop translates quality requirements into concrete scenarios and architecture impulses. The method brings product, engineering, and operations to the same view of desired properties. | 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. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 2-4 h | 2-6 h | 2-4 h |
Participantsdifferent | 5-15 | 3-10 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Quality Scenarios, Priority List, Architecture Concerns | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | RequirementsArchitectureWorkshop | CausalityIncidentRoot causeTimeline | Root causeSafetyIncident |
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