The backend is the portion of a website, web application, or mobile application that exists behind the scenes. By contrast, the “frontend” of an application is everything that the user interacts with. This includes design features in the website or application, links, transactions, images, content, and others.
The backend is often used for data storage or communication. It generally consists of a server, an application, and a database. If your mobile app sells products, then your customers will be dealing with the mobile app itself (not the backend applications). Browsing through your selection of products like electronic items or clothes and making purchases all technically occur on the frontend within the mobile app. The information about the user’s order, their account, and their personal details are all stored in the backend. This is, of course, to ensure that their information is all in one convenient location.
The backend is sort of a repository of everything that makes your web presence and mobile apps run smoothly. In many cases, all the information in the backend is stored on remote or even cloud-based servers. This can lead to certain vulnerabilities, especially when the information of your customers or employees is at risk.