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Selected:User InterviewsCommunication PlanArchitecture Decision RecordATAM (Architecture Tradeoff Analysis Method)
| Criterion |  UX Research User Interviews |  Delivery Communication Plan |  Architecture Architecture Decision Record |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. |
Complexitydifferent | Low | Low | Low | High |
Timedifferent | 30–60 min per interview | 45-90 min | 15-45 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 1 participant per interview | 2-6 | 1-3 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Communication Plan, Channel Matrix, Message Cadence | ADR File, Decision Log, Rationale | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | QualitativeResearchCustomerDiscovery | CommunicationStakeholdersDeliveryPlanning | ArchitectureRationaleDocumentationGovernance | ArchitectureQualityRiskTradeoffsStakeholders |