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Selected:Iceberg ModelSAAM (Software Architecture Analysis Method)Current Reality TreeChange Analysis
| Criterion |  Systems Thinking Iceberg Model |  Architecture SAAM (Software Architecture Analysis Method) |  Systems Thinking Current Reality Tree |  Operations Change Analysis |
|---|---|---|---|---|
Purposedifferent | The Iceberg Model separates visible events from patterns, structures, and mental models. This turns a single observation into a deeper understanding of why a problem keeps recurring. | 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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. |
Complexitydifferent | Low | High | High | Medium |
Timedifferent | 30-60 min | Preparation, scenario analysis, and findings review; effort depends on scope | 2-6 h | 45-120 min |
Participantsdifferent | 2-10 | Architecture experts and stakeholders for scenarios and weighting | 3-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Iceberg Worksheet, Pattern Notes, Intervention Ideas | 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 | Current Reality Tree, Core Problems, Intervention Ideas | Change Matrix, Cause Hypotheses, Validation Questions, Action List |
Tagsno overlap | Systems thinkingRoot causePatterns | ArchitectureChangeAnalysisComparisonQuality | Systems thinkingRoot causeConstraintsCausality | ChangeRoot causeTroubleshootingComparison |