Web hosting definition. When a hosting provider allocates space on a web server for a website to store its files, they are hosting a website. Web hosting makes the files that comprise a website (code, images, etc.) available for viewing online. Every website you've ever visited is hosted on a server.

A web host or web hosting service provider is a company that provides the technologies and services necessary to display a website or website on the Internet. Websites are hosted or stored on special computers called servers.