What does the Architecture Requirements Repository contain?

The Architecture Requirements Repository is a crucial component of the TOGAF framework, specifically within the Architecture Development Method (ADM). It primarily contains a comprehensive view of all authorized architecture requirements that have been agreed upon with the Architecture Board. This repository serves as the authoritative source of requirements that must be met by the architecture projects, ensuring that all architecture-related activities align with the strategic objectives and business needs established by the organization.

Having a centralized repository for architecture requirements helps facilitate clearer communication among stakeholders, provides a basis for decision-making, and ensures traceability of requirements throughout the architecture development lifecycle. This aligns the architecture effort with the organization's goals and objectives, enhancing overall effectiveness.

The other choices focus on aspects that, while relevant to architecture, do not specifically define the contents of the Architecture Requirements Repository. Past architectural models, validation standards, and summaries of ongoing projects could all be valuable in their respective contexts but do not pertain to the repository's primary function of capturing and managing authorized architecture requirements.