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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Knowledge Modeling IBIS |  Decision Making Risk Matrix |  Decision Making Argument Mapping |
|---|---|---|---|---|
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. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | When a project faces many possible disruptions, it quickly becomes unclear which risks deserve attention first. It separates options, evaluation criteria, and open risks. The result is captured as a Risk Matrix and a Top Risk List. | When statements, evidence, and counterarguments get mixed up, a debate quickly loses its structure. Argument Mapping breaks a thesis down into its reasoning and makes visible what it really rests on. |
Complexitydifferent | High | Medium | Low | Medium |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 1-3 h | 30-60 min | 1-3 h |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 2-8 | 3-10 | 1-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Issue Map, Positions, Argument Notes | Risk Matrix, Top Risk List | Argument Map, Evidence Gaps, Decision Rationale |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | RationaleKnowledgeDecision | RiskDecisionPrioritizationAssessment | SensemakingDecisionRationale |