Back end

Back end refers to the server-side of a software application or a website. It is the part of the software that users do not see. It is responsible for storing and organizing data, and ensuring everything on the client-side (front end) actually works. The back end communicates with the front end, sending and receiving information to be displayed as a web page.

Overview

The back end of a website consists of a server, an application, and a database. A back-end developer builds and maintains the technology that powers those components which, together, enable the user-facing side of the website to even exist in the first place.

Components

Server

The server is the computer where all the website files are stored. When you type a URL into your browser, your browser asks the server to send it the files it needs to display the website correctly.

Application

The application is the set of instructions that the server executes. It tells the server what to do with the data in the database and what information to send back to the browser.

Database

The database is where all the data the website needs to function is stored. This could be user data, like usernames and passwords, or website content, like blog posts and comments.

Back End Languages

There are several programming languages that can be used for back end development. Some of the most popular include PHP, Ruby, Python, Java, and .NET. Each of these languages has its own strengths and weaknesses, and the choice of which one to use often depends on the specific needs of the website.

See Also

• Front end
• Full stack development
• Web development
• Database management system
• Server (computing)