Ubuntu is a very popular Operating System, that makes use of the Linux kernel. Even though it's used primarily on desktop machines, its server version has been becoming more popular recently as well. Ubuntu is among the lightest Linux distributions available and it supports almost any kind of hardware, that makes it a universal Operating System. In addition, it is very stable and secure and has an at least a five-year support life cycle, so you're able to receive official security and performance updates. Unlike alternative Operating Systems, Ubuntu is distributed with no license fees and you are able to modify its core, as well as all of the thousands of packages it contains, in any way you see fit. This enables you to install the right software environment for all of your web apps whatever their specifications. As a result of the popularity of the Operating System, Ubuntu has large developer and user communities, so you will always find a lot of materials on the Internet regarding any question or problem which you might have.