Ubuntu is a widespread desktop OS, which uses the Linux kernel, but its server edition is getting really popular too. The reason is the fact that the operating system is extremely light and it'll function on almost any hardware without issues, utilizing its resources to the max. Ubuntu is also pretty reliable and secure and all of the Long-Term Support (LTS) editions are supported for a minimum of five years, which warrants that you will have a risk-free and dependable software environment on your server all of the time. In addition, Ubuntu has one of the biggest user communities around the world, which means that if you experience any problem or have any kind of question, you'll find a number of resources on the net. Among the key advantages of this Operating System is that it features a great number of software packages which can be easily customized in accordance with your needs and / or the requirements of the applications that you need to run, not to mention that you will not have to pay any kind of license fees at any time. In contrast, other Operating Systems are paid and their program code is not accessible, therefore it can't be changed.