In shared hosting , providers are typically responsible for the management of servers, security updates, installing server software and technical support. Many servers are derived from the Linux operating system as well as LAMP, which is a type of software bundle and is directed by open source software. Quite a few providers though, also offer FreeBSD-based or Windows-based solutions. As an example, the Plesk control panel can be used by both Linux and Windows operating systems because both operating systems have very similar functionality and interfaces. This is of course with the exception of specific differences inherent to each operating system.
Shared hosting providers just in the US alone are in the thousands. These providers range from small design firms to providers who have hundreds of thousands of customers. Much of the shared hosting market is driven through affiliate programs or pay per click advertising. Web hosting that is shared can also be a private operation by sharing server costs in a colocation center, otherwise known as cooperative hosting.