Ubuntu is a widespread desktop Operating System, that uses the Linux kernel, but its server edition is getting quite popular as well. The main reason is the fact that the operating system is really light and it can run on almost any hardware with no issues, utilizing its resources to the maximum. Ubuntu is also pretty reliable and secure and all of the Long-Term Support (LTS) releases are supported for at least five years, which guarantees that you will have a safe and stable software environment on your server all the time. Furthermore, Ubuntu has one of the largest user communities globally, which means that if you experience any problem or have any question, you'll find lots of resources on the Internet. Among the major benefits of this Operating System is that it has numerous software packages that can be freely modified in accordance with your needs as well as the requirements of the applications which you need to run, not to mention that you will not have to pay any license fees at all. In comparison, other Operating Systems are paid and their program code is not accessible, thus it can't be changed.