Ubuntu is a popular desktop Operating System, which uses the Linux kernel, and its server release is getting really popular as well. The main reason is that the OS is extremely light and it can run on almost any hardware without any issues, utilizing its resources to the max. Ubuntu is also really reliable and secure and all Long-Term Support (LTS) versions are supported for a minimum of five years, which guarantees that you should have a protected and stable software environment on your website hosting server all of the time. In addition, Ubuntu has one of the biggest user communities globally, which means that if you experience any problem or have any kind of question, you'll discover plenty of resources online. Among the key benefits of this OS is the fact that it has a great number of software packages that can be freely customized according to your needs as well as the needs of the apps that you would like to run, not to mention that you won't have to pay any license fees at all. In comparison, other OS's are paid and their program code isn't accessible, thus it cannot be changed.