Hello guys, if you want to learn API development and looking for the best resources like online courses, training classes, and tutorials then you have come to the right place. Earlier, I have shared the best courses to learn Spring and RESTful web services and in this article, I am going to share online courses to learn API development. Application Programming Interface, commonly known as API is used as a source of communication between applications. By using API, features, or services of an application can be used in another application. API development has become an integral part of modern application development. Today, a full-fledged application is incomplete without APIs.