Ubuntu is a widely used desktop OS, that uses the Linux kernel, but its server release is getting really popular too. The main reason is the fact that the OS is really light and it will 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 of the Long-Term Support (LTS) editions are supported for a minimum of five years, which warrants that you will have a secure and stable software environment on your website hosting server all of the time. In addition, Ubuntu has one of the largest user communities on earth, so if you experience any problem or have any question, you'll discover lots of resources online. Among the basic advantages of this OS is the fact that it comes with a large number of software packages which can be easily changed in accordance with your needs and / or the needs of the applications which you want to run, not to mention that you will not have to pay any license fees at any time. In comparison, other OS's are paid and their code isn't accessible, which means that it cannot be changed.