Ubuntu is a preferred desktop OS, which uses the Linux kernel, but its server release is getting pretty popular as well. The main reason is the fact that the OS is amazingly light and it can run on almost any hardware without issues, utilizing its resources to the fullest. Ubuntu is also extremely reliable and secure and all Long-Term Support (LTS) editions are supported for at least five years, which guarantees that you will have a protected and stable software environment on your website hosting server all the time. Also, Ubuntu has one of the biggest user communities globally, so if you experience any issue or have any kind of question, you will find lots of resources on the net. Among the major advantages of this Operating System is that it contains a large number of software packages that can be freely changed in accordance with your needs as well as the needs of the applications that you need to run, not to mention that you won't have to pay any kind of license fees any time. In contrast, other OS's are paid and their program code is not accessible, therefore it cannot be changed.