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Selected:Fault Tree AnalysisSAAM (Software Architecture Analysis Method)Change Analysis8D Problem Solving
| Criterion |  Operations Fault Tree Analysis |  Architecture SAAM (Software Architecture Analysis Method) |  Operations Change Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | 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 deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. |
Complexitydifferent | High | High | Medium | High |
Timedifferent | 2-6 h | Preparation, scenario analysis, and findings review; effort depends on scope | 45-120 min | 1-6 Wochen |
Participantsdifferent | 3-8 | Architecture experts and stakeholders for scenarios and weighting | 2-6 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | 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 | Change Matrix, Cause Hypotheses, Validation Questions, Action List | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | RiskRoot causeSafety | ArchitectureChangeAnalysisComparisonQuality | ChangeRoot causeTroubleshootingComparison | QualityProblem solvingRoot cause |