Which class of architectural information held within the Architecture Repository would contain adopted reference models?

The correct answer is the Reference Library, which is designed to house adopted reference models among other architectural artifacts. In the context of the Architecture Repository, the Reference Library serves as a collection of standard reference models, architectural patterns, and best practices that organizations can utilize to inform their architectural development efforts.

The Reference Library explicitly contains those reference models that have been adopted as standards within the organization or framework. These models facilitate the alignment of architecture with organizational goals and ensure consistency over time, making them an essential resource for architects during both planning and execution phases.

Understanding the function of the Reference Library helps clarify why it is the appropriate class for this type of information in TOGAF. Other options, while relevant to different aspects of architecture, do not specifically serve the purpose of housing adopted reference models. For instance, the Architecture Metamodel defines the structure and relationships of the components of architecture frameworks without containing the actual reference models. The Architecture Capability refers to the organization’s competence in establishing and managing an architecture function, while the Standards Information Base is focused on the governance and compliance of specific architectural standards rather than storing reference models themselves.