Ubuntu is a widespread desktop OS, which uses the Linux kernel, and its server version is getting very popular as well. The main reason is the fact that the OS is extremely light and it can function on almost any kind of hardware without any issues, utilizing its resources to the max. Ubuntu is also very reliable and secure and all Long-Term Support (LTS) versions are supported for at least 5 years, which warrants that you should have a secure and dependable software environment on your hosting server all of the time. In addition, Ubuntu has one of the biggest user communities around the world, so if you experience any kind of problem or have any kind of question, you'll discover lots of resources online. Among the key advantages of this Operating System is that it has thousands of software packages that can be easily modified in accordance with your needs as well as the requirements of the applications which you intend 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 program code isn't accessible, therefore it can't be changed.