Linux is an OS, which is not that popular for desktop machines, but is one of the most widely used OSs for servers. It's totally free, so you will not need to pay any license fees as part of your hosting payments. Linux is also thought of as the most secure OS out there and due to the permissions that files have and also the file types that can be run, virus files that could infect an average computer system shall simply not be executed on a Linux-based web server. Furthermore, the OS is freeware, so it can be changed without any restrictions, as a way to match the needs of the website hosting company and their clients. This means that unnecessary software packages could be removed to make the OS lighter and much faster, that may directly result in much better hosting server performance. A large number of Linux machines have the Apache web server set up on them, since this software is also totally free, quick and stable. It is the most widely used web server available and is part of the LAMP bundle that lots of script apps, like WordPress and Joomla™, need. LAMP is an abbreviation for Linux, Apache, MySQL and PHP.
Stable Linux with Apache in Cloud Hosting