Ubuntu is a well known desktop Operating System, that uses the Linux kernel, and its server version is getting very popular as well. The reason is that the operating system is really light and it will run on almost any hardware with no issues, utilizing its resources to the max. Ubuntu is also really reliable and secure and all Long-Term Support (LTS) editions are supported for at least 5 years, which warrants that you should have a risk-free and stable software environment on your server at all times. Also, Ubuntu has one of the biggest user communities around the world, which means that if you experience any kind of problem or have any question, you will discover a number of resources online. Among the major advantages of this Operating System is that it includes a large number of software packages that can be freely adjusted according to your needs and / or the requirements of the applications which you intend to run, not to mention that you will not have to pay any license fees at any time. In contrast, other Operating Systems are paid and their code isn't accessible, therefore it cannot be changed.