Ubuntu is a well known desktop Operating System, that uses the Linux kernel, but its server version is getting quite popular too. The reason is that the operating system is extremely light and it'll function on almost any kind of hardware with no issues, utilizing its resources to the maximum. Ubuntu is also really reliable and secure and all the Long-Term Support (LTS) versions are supported for at least 5 years, which guarantees that you will have a safe and stable software environment on your website hosting server all the time. In addition, Ubuntu has one of the biggest user communities worldwide, so if you experience any problem or have any question, you will find lots of resources online. One of the key advantages of this OS is the fact that it has numerous software packages which can be freely changed according to your needs as well as the needs of the applications which you'd like to run, not to mention that you won't have to pay any license fees at any time. In comparison, other Operating Systems are paid and their program code isn't accessible, therefore it cannot be changed.