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Selected:C4 ModelFishbone DiagramSAAM (Software Architecture Analysis Method)Failure Mode and Effects Analysis
| Criterion |  Architecture C4 Model |  Operations Fishbone Diagram |  Architecture SAAM (Software Architecture Analysis Method) |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Low | Low | High | High |
Timedifferent | 1-4 h | 30-60 min | Preparation, scenario analysis, and findings review; effort depends on scope | 2-6 h |
Participantsdifferent | 1-5 | 2-8 | Architecture experts and stakeholders for scenarios and weighting | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | 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 | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | ArchitectureCommunicationVisualization | Root causeQualityOperations | ArchitectureChangeAnalysisComparisonQuality | RiskQualityOperationsRoot cause |