As a developer, chances are you have created, consumed (or both) APIs at some point in your career. If you are a mobile/web/UI developer, you have definitely interacted with APIs because the data to be displayed needs to come from somewhere and if you are a backend developer, you have definitely created APIs to interact with other services (UIs and other backend services alike). One of the best things available to software engineers especially those that have to build APIs is the availability of an RFC for all things API related: status codes, headers, cookies, request/response bodies etc. With thatâ¦