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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  UX Research Card Sorting |  Architecture C4 Model |  Delivery Communication Plan |
|---|---|---|---|---|
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 content only makes sense internally and users can't find the structure again, card sorting exposes their mental order. Terms, groups, and naming are then aligned with the target group's expectations. | 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 many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 20-45 min | 1-4 h | 45-90 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | Based on research question | 1-5 | 2-6 |
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 | Content groups, Label set, IA hypotheses | Context Diagram, Container Diagram, Component Diagram | Communication Plan, Channel Matrix, Message Cadence |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | Information architectureNavigationStructure | ArchitectureCommunicationVisualization | CommunicationStakeholdersDeliveryPlanning |