Design patterns are proven solutions and best practices used by software developers to solve common problems encountered in software design. These patterns provide a template for how to structure code efficiently and effectively, promoting code reusability, scalability, and maintainability. Some of the most well-known design patterns are categorized into three types: creational, structural, and behavioral.

Creational patterns, such as Singleton and Factory Method, focus on the efficient creation of objects. Structural patterns, including Adapter and Composite, deal with the organization of classes and objects to form larger structures. Behavioral patterns, like Observer and Strategy, address communication between objects and the delegation of responsibilities. By understanding and applying these patterns, developers can streamline the development process, reduce errors, and enhance collaboration within teams. Design patterns are fundamental to object-oriented programming and are widely used in modern software development.

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