Linux is an Operating System, that isn't that common for desktop machines, but is one of the most commonly used OSs for web servers. It's absolutely free, so you won't need to pay any license charges as part of your web hosting payments. Linux is additionally considered to be the most risk-free OS available and thanks to the permissions that files have along with the file types that can be run, virus files that may infect a regular personal computer will simply not be executed on a Linux-based web server. Moreover, the OS is totally free, so it can easily be modified with no limits, so that it will satisfy the requirements of the website hosting company and their customers. This also implies that unneeded software packages could be removed to make the OS lighter and a lot quicker, that can directly contribute to much better hosting server performance. A lot of Linux machines have the Apache web server set up on them, because this application is also totally free, quick and stable. It's the most widely used web server available and is part of the LAMP bundle that many script applications, like WordPress and Joomla™, require. LAMP is an abbreviation for Linux, Apache, MySQL and PHP.
Stable Linux with Apache in Shared Website Hosting