Ubuntu is a widely used desktop Operating System, that uses the Linux kernel, and its server release is getting very popular as well. The main reason is that the OS is amazingly light and it can run on almost any kind of hardware without issues, utilizing its resources to the fullest. Ubuntu is also very reliable and secure and all of the Long-Term Support (LTS) versions are supported for a minimum of 5 years, which guarantees that you should have a risk-free and dependable software environment on your website hosting server at all times. Also, 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 lots of resources on the net. One of the major advantages of this OS is that it has tens of thousands of software packages which can be easily modified according to your needs and / or the requirements of the applications which you need to run, not to mention that you will not have to pay any license fees any time. In comparison, other Operating Systems are paid and their program code isn't accessible, which means that it cannot be changed.