Student or Learner
In the phrase below, what is the subject of the underlined sentence. and what does this sentence mean?
Abstraction ties into many aspects of service-orientation. On a fundamental level, this principle emphasizes the need to hide as much of the underlying details of a service as possible. Doing so directly enables and preserves the previously described loosely coupled
"Doing" is the subject. It's a gerund.
"Doing so" refers to the previous thought. That is, hiding the underlying details.
Doing so enables and preserves the relationship.