How do you perceive the main principles of software development?

The main principles of software development include:

• Code cleanliness and readability — code should be understandable and maintainable.
• Modularity — dividing functionality into independent components.
• Reusability — avoiding code duplication.
• Testability — code should be easily subject to automated testing.
• Encapsulation — hiding internal implementation and providing clear interfaces.
• Single Responsibility Principle (SRP) — each class or module is responsible for one task.
• Error handling — proper and predictable management of errors.

In iOS development, these principles help create reliable, scalable, and maintainable applications, using patterns such as MVC, MVVM, and following Apple's recommendations on architecture and coding style.