API stands for Application Programming Interface. It is essentially a set of instructions, protocols, and tools used by developers to build software applications. An API provides a way for two applications to talk to each other, allowing them to share data and perform tasks. For example, when you open a web page in your browser, the browser sends a request to the web server for the page you requested. The API then allows the server to respond with the requested data in the form of HTML, which is then displayed on your screen. This same concept applies to other types of applications such as mobile applications, desktop applications, and even games. As an analogy, you can think of an API as being like a waiter in a restaurant. The waiter takes the order from the customer, relays it to the kitchen, and then delivers the finished meal back to the customer. Statistics show that in 2019, the global API market size was estimated to be worth $1.2 billion and is expected to reach $2.7 billion by 2026. Fun Fact: The first API was created in the late 1960s to connect mainframe computers together.