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| Criterion |  Operations Fishbone Diagram |  Architecture SAAM (Software Architecture Analysis Method) |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | SAAM helps teams judge an architecture’s suitability for selected tasks and changes. It is particularly useful for examining modifiability and comparing architecture alternatives with clear reasoning. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | High | Low |
Timedifferent | 30-60 min | Preparation, scenario analysis, and findings review; effort depends on scope | 15-30 min |
Participantsdifferent | 2-8 | Architecture experts and stakeholders for scenarios and weighting | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Domain functions mapped to components and connections, Quality attributes and evaluation criteria, Typical tasks and their effects on the architecture, Reasoned evaluation or comparison of alternatives | Root cause notes, Countermeasures |
Tagsno overlap | Root causeQualityOperations | ArchitectureChangeAnalysisComparisonQuality | Root causeIncidentLeanProblem solving |
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