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Selected:Behavior Over Time GraphATAM (Architecture Tradeoff Analysis Method)Iceberg ModelFailure Mode and Effects Analysis
| Criterion |  Systems Thinking Behavior Over Time Graph |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Systems Thinking Iceberg Model |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | A Behavior Over Time Graph shows how a metric or observation develops over time. The method makes trends, breaks, and recurring patterns visible that get lost in snapshots. | 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. | 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. | 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 | High | Low | High |
Timedifferent | 20-45 min | Several meetings plus preparation and analysis; total effort depends on scope | 30-60 min | 2-6 h |
Participantsdifferent | 1-10 | Evaluation team, architects, and relevant stakeholders | 2-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Behavior Over Time Graph, Trend Hypotheses, Key Events | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Iceberg Worksheet, Pattern Notes, Intervention Ideas | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Systems thinkingPatternsDynamics | ArchitectureQualityRiskTradeoffsStakeholders | Systems thinkingRoot causePatterns | RiskQualityOperationsRoot cause |