Ubuntu is an extremely popular Operating System, which employs the Linux kernel. Though it's used mainly on personal computers, its server version has been gaining in popularity these days as well. Ubuntu is one of the lightest Linux distributions you can get and it's compatible with almost any hardware, which makes it a universal OS. It's also very stable and secure and has an at least a five-year support life cycle, so you will be able to receive official safety and performance updates. Unlike alternative OS's, Ubuntu is distributed with no license fees and you are able to customize its core, or all of the countless packages it features, in any way you find fit. This enables you to set up the optimal software environment for all of your web applications irrespective of their requirements. Because of the popularity of the Operating System, Ubuntu has huge developer and user communities, which means that you'll always find find a lot of materials on the web related to any question or problem which you may have.