Ubuntu is a widely used desktop Operating System, that uses the Linux kernel, but its server release is getting pretty popular as well. The main reason is that the operating system is really light and it will run on almost any kind of hardware without issues, utilizing its resources to the fullest. Ubuntu is also extremely reliable and secure and all the Long-Term Support (LTS) editions are supported for at least 5 years, which guarantees that you will have a secure and stable software environment on your hosting server at all times. In addition, Ubuntu has one of the largest user communities in the world, which means that if you experience any problem or have any question, you'll find numerous resources online. Among the basic advantages of this OS is that it has thousands of software packages which can be easily adjusted in accordance with your needs and / or the needs of the apps which you want to run, not to mention that you won't have to pay any license fees at all. In comparison, other Operating Systems are paid and their code isn't accessible, therefore it can't be changed.