Ubuntu is a popular desktop OS, which uses the Linux kernel, but its server version is getting really popular too. The reason is that the OS is very light and it will run on almost any kind of hardware without issues, utilizing its resources to the maximum. Ubuntu is also very reliable and secure and all of the Long-Term Support (LTS) versions are supported for a minimum of five years, which guarantees that you will have a risk-free and stable software environment on your web hosting server all of the time. Furthermore, Ubuntu has one of the largest user communities around the world, so if you experience any issue or have any question, you'll discover a number of resources on the web. Among the main advantages of this Operating System is that it features numerous software packages that can be easily adjusted in accordance with your needs and / or the requirements of the apps that you would like to run, not to mention that you will not have to pay any license fees any time. In contrast, other Operating Systems are paid and their program code isn't accessible, thus it cannot be changed.