# Back-end development: what it is and how it works
> Back-end development builds the part of an application that processes requests, applies rules and manages data outside the user interface.
URL: https://www.zorraquino.com/en/dictionary/internet/back-end-web-development.html

# Back-end development

Back-end development builds the part of an application that processes requests, applies rules and manages data outside the user interface. It can include services, databases and integrations

What it means, how it is used and where it comes up, with its related concepts.

[The whole glossary](https://www.zorraquino.com/en/dictionary)

## What it is and how it works

It uses a range of languages and environments. Node.js, for example, is a [JavaScript](https://www.zorraquino.com/en/dictionary/internet/javascript.html) runtime, not a separate language. The back end must validate incoming operations, control permissions and handle errors. Hiding or disabling an action in the interface does not protect the system on its own.

Also known as

backend development, server-side development

Topics

[Technology and data](https://www.zorraquino.com/en/dictionary/category/tecnologia-y-datos)

## Related concepts

- [Back-end](https://www.zorraquino.com/en/dictionary/internet/back-end.html)
- [Front end](https://www.zorraquino.com/en/dictionary/internet/front-end-web-development.html)
- [API](https://www.zorraquino.com/en/dictionary/internet/application-programming-interface.html)