Ubuntu is a well known desktop Operating System, that uses the Linux kernel, but its server version is getting very popular too. The reason is that the operating system is very light and it can run on almost any kind of hardware without any issues, utilizing its resources to the maximum. Ubuntu is also really reliable and secure and all the Long-Term Support (LTS) versions are supported for at least 5 years, which guarantees that you should have a secure and stable software environment on your hosting server all of the time. Also, Ubuntu has one of the largest user communities in the world, so if you experience any kind of problem or have any question, you'll find lots of resources on the web. Among the main benefits of this OS is the fact that it contains numerous software packages that can be freely modified according to your needs and the needs of the applications that you want to run, not to mention that you will not have to pay any kind of license fees at any time. In comparison, other Operating Systems are paid and their code isn't accessible, therefore it cannot be changed.