API is a set of protocols, procedures, and tools used for the development of software applications. There are several benefits of using APIs, some of which include improved efficiency, integration with third-party services, scalability, better user experience, increased innovation, and cost savings.
If you are interested in learning more about API then check out this video offered by Intellipaat. Upon watching this video you will get better understanding of what is API, about its working, uses and benefits -