Which document serves as a basis for all subsequent architecture development activities in TOGAF?

The Architecture Vision document is crucial in TOGAF as it establishes the foundation for all subsequent architecture development activities. This document serves to outline the overall objectives, scope, and high-level motivations for the architecture initiative. By articulating the vision, it helps align stakeholders, ensuring everyone understands the intended direction and goals of the architecture effort.

This vision also helps define the expectations and requirements that guide future work, including the specific architecture domains and the principles that will direct the development. By setting a clear vision, it supports the Architecture Development Method (ADM) phases that follow, ensuring that further architectural work is consistent with the established objectives and context.

In contrast, other documents play supporting roles in the architecture process. The Governance Framework typically outlines the governance structure and processes but does not initiate the architecture development. The Implementation Strategy document focuses on how to realize the vision, while the Architecture Roadmap provides a timeline and milestones for the execution. While important, these documents follow the vision and cannot serve as the foundation for architecture development in the same way that the Architecture Vision does.