A web hosting service is a type of Internet hosting service that hosts websites for clients, i.e. it offers the facilities required for them to create and maintain a site and makes it accessible on the World Wide Web. Companies providing web hosting services are sometimes called web hosts.

Web hosting is about providing server space, web services, and file maintenance for websites controlled by individuals or companies that do not have their own web servers. Many ISPs, such as America Online, give subscribers a small amount of server space to host a personal website. Other commercial ISPs charge you based on the complexity of the website they host.