Ubuntu is a popular desktop OS, that uses the Linux kernel, and its server release is getting really popular too. The main reason is that the operating system is very light and it can function 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) releases are supported for a minimum of 5 years, which guarantees that you should have a secure and dependable software environment on your server all the time. In addition, Ubuntu has one of the largest user communities on the planet, so if you experience any difficulty or have any kind of question, you will discover plenty of resources on the web. Among the main benefits of this Operating System is that it includes a large number of software packages that can be freely adjusted in accordance with your needs and / or the needs of the applications which you'd like to run, not to mention that you won't have to pay any license fees any time. In contrast, other OS's are paid and their program code is not accessible, which means that it cannot be changed.