Thus, your “front end” is born.
Back End — Everything Going On Behind The Scenes
Your app’s “back end,” also known as the “server side,” is pretty much everything else. While this part is not seen, is still plays an important role. Your back end serves to provide the functionality you need, like connecting with a database to store user account information, or integrating an API such as mapping.
The term “API,” which is short for “application programming interface,” is one that is important to understand. An API is generally understood as a compilation of the different “methods” or “web services” within an application. For example, the “Google Maps Directions API” is a service that calculates directions between locations. When building Google Maps, the developers built a back end that could easily be integrated into other applications, as it is on Uber for example. This is a smart, modern approach to building a back end.