Ubuntu is a popular desktop OS, which uses the Linux kernel, and its server release is getting very popular too. The main reason is that the operating system is very light and it can function on almost any kind of hardware without any issues, utilizing its resources to the fullest. Ubuntu is also pretty reliable and secure and all of the Long-Term Support (LTS) releases are supported for a minimum of 5 years, which guarantees that you will have a risk-free and stable software environment on your website hosting server all the time. In addition, Ubuntu has one of the biggest user communities on the planet, which means that if you experience any kind of problem or have any question, you will find plenty of resources on the web. Among the major advantages of this OS is that it features numerous software packages that can be easily modified in accordance with your needs and / or the requirements of the apps which you want to run, not to mention that you will not have to pay any kind of license fees at any time. In comparison, other OS's are paid and their code is not accessible, therefore it can't be changed.