Linux is an OS, which is not that widely used for desktop machines, but is one of the most frequently used OSs for servers. It is 100 % free, so you won't need to pay any license charges as part of your hosting payments. Linux is furthermore regarded as being the most reliable OS nowadays and due to the permissions which files have and the file types that can be run, virus files which can infect a regular personal computer will simply not be executed on a Linux-based hosting server. Furthermore, the OS is freeware, so it could be modified with no limits, so as to satisfy the needs of the website hosting company and their customers. This implies that unwanted software packages can be removed to make the OS lighter and faster, which could directly contribute to much better hosting server performance. Lots of Linux machines have the Apache web server installed on them, since this piece of software is also totally free, quick and stable. It's the most popular web server out there and is an element of the LAMP bundle that many script applications, including Joomla™ and WordPress, require. LAMP is an abbreviation for Linux, Apache, MySQL and PHP.