What is the purpose of using design patterns in software development?

Design patterns help create more understandable, maintainable, and extendable code. They are proven solutions to common software design problems.

Using patterns allows:

• To improve code readability and structure.
• To avoid reinventing solutions.
• To facilitate teamwork and project support.

For example, the Singleton pattern guarantees that a class has only one instance, and the Observer pattern helps organize notification of objects about changes in the state of another object.