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Selected:SAAM (Software Architecture Analysis Method)5 Whys8D Problem SolvingRoot Cause Tree Analysis
| Criterion |  Architecture SAAM (Software Architecture Analysis Method) |  Operations 5 Whys |  Operations 8D Problem Solving |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | High | Low | High | Medium |
Timedifferent | Preparation, scenario analysis, and findings review; effort depends on scope | 15-30 min | 1-6 Wochen | 1-3 h |
Participantsdifferent | Architecture experts and stakeholders for scenarios and weighting | 2-6 | 4-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | 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 | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | ArchitectureChangeAnalysisComparisonQuality | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause | Root causeTreeIncidentQuality |