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| Criterion |  Architecture arc42 |  Agile Three Amigos |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Agile Acceptance Criteria Workshop |
|---|---|---|---|---|
Purposedifferent | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | When story, test, and implementation could drift apart, it brings business perspective, engineering, and quality together early. It prevents a story from being read differently only late in the process. | 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 a story needs clear checkpoints before implementation, it sharpens expectation and scope together. It sorts work by value, risk, and delivery ability. The result is captured as Acceptance Criteria and a Story Update. |
Complexitydifferent | Low | Low | High | Low |
Timedifferent | 1-2 Tage | 15-30 min | Several meetings plus preparation and analysis; total effort depends on scope | 20-40 min pro Story |
Participantsdifferent | 1-4 | 3 | Evaluation team, architects, and relevant stakeholders | 3-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Architecture Document, Context View, Runtime View, Deployment View | Clarified Story, Test Examples, Open Questions | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Acceptance Criteria, Story Update |
Tagsno overlap | ArchitectureDocumentationCommunication | CollaborationBehavior-Driven DevelopmentQualityRefinement | ArchitectureQualityRiskTradeoffsStakeholders | AgileRequirementsRefinementBehavior-Driven Development |