just enough architecture - Abstractions in architecture

src: Just Enough Software Architecture: A Risk-Driven Approach by George H. Fairbanks | Goodreads

Abstract

Abstraction can effectively combat complexity and scale because it shrinks problems, and smaller problems are easier to reason about. If you are driving from New York to Los Angeles, you can simplify the navigation problem by considering only highways. By hiding details (excluding the option of driving across fields or parking lots), you have shrunken the number of options to consider, making the problem easier to reason about.