Ubuntu is a widespread desktop Operating System, which uses the Linux kernel, and its server release is getting really popular too. The main reason is that the operating system is very light and it can function on almost any kind of hardware with no issues, utilizing its resources to the max. Ubuntu is also really 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 secure and dependable software environment on your web hosting server at all times. Also, Ubuntu has one of the largest user communities worldwide, which means that if you experience any difficulty or have any question, you'll find lots of resources online. Among the key benefits of this OS is the fact that it has a great number of software packages which can be easily modified in accordance with your needs and the needs of the apps which you intend to run, not to mention that you won't have to pay any kind of license fees at any time. In contrast, other OS's are paid and their code isn't accessible, thus it can't be changed.