Ubuntu is a widespread desktop OS, that uses the Linux kernel, but its server release is getting very popular too. The main reason is the fact that the OS is very light and it will run on almost any kind of hardware with no issues, utilizing its resources to the max. Ubuntu is also extremely reliable and secure and all Long-Term Support (LTS) editions are supported for a minimum of 5 years, which warrants that you should have a protected and stable software environment on your web hosting server all of the time. In addition, Ubuntu has one of the largest user communities on earth, which means that if you experience any difficulty or have any question, you'll discover a number of resources on the web. Among the main advantages of this OS is the fact that it comes with tens of thousands of software packages which can be easily changed in accordance with your needs as well as the requirements of the applications that you want to run, not to mention that you won't have to pay any license fees any time. In comparison, other Operating Systems are paid and their code isn't accessible, therefore it can't be changed.