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Selected:ATAM (Architecture Tradeoff Analysis Method)Scatter Diagram5 WhysFailure Mode and Effects Analysis
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Scatter Diagram |  Operations 5 Whys |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | When the question is whether two measures are related, the method makes patterns in the data picture visible. It separates felt correlations from relationships that actually show up in the data. | 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 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 | High | Low | Low | High |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 30-90 min | 15-30 min | 2-6 h |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 1-4 | 2-6 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Root cause notes, Countermeasures | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | Root causeQualityVisualization | Root causeIncidentLeanProblem solving | RiskQualityOperationsRoot cause |