What is the role of abstraction in software system development?

Abstraction in software development allows hiding complex implementation details and providing a simple interface for interaction. This helps:

• Reduce system complexity by dividing it into layers.
• Increase code reusability.
• Facilitate maintenance and system extension.
• Improve code readability and understanding.

For example, in iOS, you can create an abstract class or protocol for network operations, hiding the details of specific implementations (URLSession, Alamofire, etc.), which allows easy changing of the implementation without modifying the rest of the code.