33. Building Blocks
33.2.2 Generic Characteristics
A building block's boundary and specification should be loosely coupled to its implementation; i.e., it should be possible to realize a building block in several different ways without impacting the boundary or specification of the building block.
33.2 Introduction to Building Blocks
33.2.2 Generic Characteristics
A building block's boundary and specification should be loosely coupled to its implementation;
https://pubs.opengroup.org/architecture/togaf9-doc/arch/chap33.html
Correct Answer
A building block's boundary and specification should be loosely coupled to its implementation; i.e., it should be possible to realize a building block in several different ways without impacting the boundary or specification of the building block. The way in which assets and capabilities are assembled into building blocks will vary widely between individual architectures. Every organization must decide for itself what arrangement of building blocks works best for it. A good choice of building blocks can lead to improvements in legacy system integration, interoperability, and flexibility in the creation of new systems and applications.
Reference: "A building block's boundary and specification should be loosely coupled to its implementation"
Link: https://pubs.opengroup.org/architecture/togaf9-doc/m/chap33.html
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