Swift has become the number one language used in iOS and macOS development. The Swift standard library is developed using Protocol-Oriented Programming techniques, generics, and first-class value semantics; therefore, every Swift developer should understand these powerful concepts and how to take advantage of them in their application design. This course will help you understand the differences between Object-Oriented Programming and Protocol-Oriented Programming. It demonstrates how to work with Protocol-Oriented Programming using real-world use cases. You will gain a solid knowledge of the various types that can be used in Swift and the differences between value and reference types. You will be taught how Protocol-Oriented Programming techniques can be used to develop very flexible and easy-to-maintain code. By the end of the course, you will have a thorough understanding of Protocol-Oriented Programming and how to utilize it to build powerful and practical applications.