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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture C4 Model |  Facilitation Stakeholder Mapping |  Facilitation Power Interest Grid |
|---|---|---|---|---|
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. | 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 an initiative depends on many people, interests, and power dynamics, Stakeholder Mapping systematically orders the environment. It shows who influences, who is affected, and where relationship management or safeguarding matters first. | When many stakeholders compete for attention at once, the Power Interest Grid sorts them by influence and stake. It turns individual contributions into a visible selection. The result is captured as a Power Interest Grid and a stakeholder-specific strategy. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 1-4 h | 60–90 min | 30-60 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 1-5 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | 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 | Context Diagram, Container Diagram, Component Diagram | Stakeholder Map, Engagement Plan, Risk Notes | Power Interest Grid, Strategy per Stakeholder |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | ArchitectureCommunicationVisualization | StakeholdersAlignmentFacilitationChange | StakeholdersFacilitationAlignmentPlanning |