API stands for Application Programming Interface. An API is a way of allowing your application or a program to interact with another program using a simple set of commands. It doesn’t matter whether these programs are running on the same computer or not. Companies use APIs to serve their services and tools to their customers. You may know that some companies package their APIs as products.
This is a companion discussion topic for the original entry at https://blog.crowdbotics.com/10-little-known-useful-web-apis/