Object-Oriented Programming (OOP) is built on several key principles that help developers create clear, maintainable, and extendable code. The most recognized principles are encapsulated in the SOLID acronym, which stands for:

1. Single Responsibility Principle: Each class should have one responsibility or purpose, making it easier to understand and maintain.

2. Open/Closed Principle: Software entities should be open for extension but closed for modification, allowing new functionality to be added without altering existing code.

3. Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.

4. Interface Segregation Principle: Clients should not be forced to depend on interfaces they do not use, promoting the creation of smaller, more specific interfaces.

5. Dependency Inversion Principle: High-level modules should not depend on low-level modules; both should depend on abstractions, reducing the coupling between components ³⁴.

Understanding and applying these principles can significantly enhance the quality of software development ⁴.