Ubuntu is a popular desktop Operating System, that uses the Linux kernel, and its server version is getting really popular too. The main reason is the fact that the operating system is very light and it'll run on almost any kind of hardware without issues, utilizing its resources to the fullest. Ubuntu is also extremely reliable and secure and all the Long-Term Support (LTS) releases are supported for at least 5 years, which warrants that you will have a safe and stable software environment on your hosting server all of the time. Also, Ubuntu has one of the largest user communities on earth, which means that if you experience any difficulty or have any kind of question, you will discover a number of resources on the web. Among the major advantages of this Operating System is the fact that it comes with thousands of software packages that can be freely changed according to your needs as well as the requirements of the applications that you wish to run, not to mention that you will not have to pay any license fees at any time. In comparison, other OS's are paid and their program code is not accessible, thus it cannot be changed.