Ubuntu is a really popular Operating System, that makes use of the Linux kernel. While it's used primarily on PCs, its server version has been becoming more popular lately as well. Ubuntu is one of the lightest Linux releases available and it is compatible with almost any kind of hardware, that makes it a universal OS. In addition, it is very stable and secure and has an at the very least a 5-year support life cycle, so you can get official protection and performance updates. Unlike a number of other Operating Systems, Ubuntu is distributed without any license fees and you can customize its core, and any of the numerous packages it features, in any way you find fit. This allows you to install the best software environment for all of your web applications irrespective of their specifications. Due to the popularity of the OS, Ubuntu has vast developer and user communities, so you can always find find a lot of materials on the world wide web about any question or problem which you may have.