Reseller hosting is the provision of Web hosting services to companies that in turn act as Web hosts for other companies, typically providing Web site design and management services as well as acting as host for the site and serving its pages to users. For example, a hypothetical Sports Site Server Inc. could provide a package for professional or amateur sports teams that included an easy-to-use approach to creating a Web site as well as the space for the Web site's pages and an easy-to-use interface for keeping the site up-to-date. Sports Site Server would actually use the computer and storage facilities of Giant Host, Inc., a hosting company that offered similar reselling capabilities to many companies like Sports Site Server. A large hosting company that allowed reselling (like Giant Host) might actually host hundreds of Web sites.
In general, a reseller is a company that buys a product or service from another company and repackages it, usually adding something to it, to other companies under its own company or brand name.