What is a key characteristic of an ART with respect to work?

• A. Teams are specialized and separate.
• B. ARTs operate without any synchronization.
• C. Features are built by external vendors only.
• D. Teams are cross-functional and self-organizing to define, build, and test features.

Answer: (D)

In SAFe, an Agile Release Train is defined by cross-functional, self-organizing teams that collaborate to define, build, and test features together. This setup ensures that all the skills needed to deliver a feature—development, testing, design, and sometimes architecture—are available within the train, so work can be planned and executed end-to-end. Teams within the ART plan together in the Program Increment, break features into user stories, and synchronize through events like PI planning and system demos to deliver value incrementally.

This arrangement is the best fit because it emphasizes end-to-end responsibility and coordination across multiple teams, enabling faster feedback and alignment. Specialized or separate silos would hinder collaboration, lack of synchronization would break cadence, and having features built only by external vendors ignores the integrated, cross-functional nature of the ART.