Building blocks are reusable components of business, IT, or architectural capability that can be

combined to deliver architectures and solutions. Building blocks can be defined at various levels of

detail, depending on the stage of architecture development. In the earlier phases of the ADM cycle

(A to D), building blocks are defined in generic terms, such as logical or physical, to provide a high-

level view of the architecture. In Phase E: Opportunities and Solutions, building blocks become

implementation-specific, meaning that they are linked to specific products, standards, technologies,

and vendors that are available in the market. This phase also identifies the delivery vehicles, such as

projects, programs, or portfolios, that will realize the building blocks12 Reference: 1: The TOGAF

Standard, Version 9.2, Part II: Architecture Development Method (ADM), Chapter 23: Phase E:

Opportunities and Solutions 2: The TOGAF Standard, Version 9.2, Part IV: Architecture Content

Framework, Chapter 36: Building Blocks