The server side of a website is called backend. Its main task is to arrange the data and make sure that the client does not face any problem related to it, and the website works fine. The user does not come in direct contact with this part. This part of the website cannot be seen or directly interacted with the user. The user indirectly accesses the parts and characteristics developed by the backend designer through front end applications. Backend generally includes activities like writing APIs, working with system components and creating libraries without user interface.