Linux is an Operating System, that is not that popular for desktop machines, but is one of the most commonly used OSs for servers. It's 100 % free, so you won't have to pay any license costs as part of your website hosting payments. Linux is additionally thought of as the most risk-free Operating System nowadays and due to the permissions that files have along with the file types that can be run, virus files that can infect a standard computer system shall simply not be executed on a Linux-based hosting server. Also, the Operating System is absolutely free, so it can easily be changed with no limitations, as a way to match the needs of the web hosting company and their clients. This also means that unnecessary software packages can easily be removed to make the Operating system lighter and swifter, which can directly contribute to much better server performance. A lot of Linux machines have the Apache web server set up on them, since this software is also absolutely free, quick and secure. It's the most frequently used web server out there and is part of the LAMP bundle that many script apps, like WordPress and Joomla™, require. LAMP is an abbreviation for Linux, Apache, MySQL and PHP.