What is the ultimate goal of implementing 'separation of concerns' in architecture?

The ultimate goal of implementing 'separation of concerns' in architecture is to reduce maintenance complexity. By clearly defining and organizing different aspects of a system into distinct sections, or "concerns," developers can focus on individual components without being overwhelmed by the complexities of the entire system.

This practice enhances modularity, making it easier to understand and manage each part of the application independently. As a result, changes to one module can often be made with minimal impact on others, allowing for easier updates, debugging, and scalability. This separation also helps teams to work collaboratively on different parts of the system, increasing productivity and reducing the likelihood of introducing errors.

In contrast, creating a single, large module does not promote understanding but rather complicates the system. Increasing the number of connections between components would lead to more interdependencies, making maintenance more complex rather than less. Eliminating documentation requirements is counterproductive, as proper documentation aids in understanding and maintaining separate concerns effectively.