Ubuntu is a very popular Operating System, which uses the Linux kernel. Although it is used mainly on PCs, its server version has been becoming more popular these days as well. Ubuntu is one of the lightest Linux releases you can get and it's compatible with almost any hardware, that makes it a universal Operating System. It's also very stable and secure and has an a minimum of a 5-year support life cycle, so you'll be able to get official protection and performance updates. Unlike many other Operating Systems, Ubuntu is distributed devoid of license fees and you are able to customize its core, as well as all of the countless packages it comes with, in any way you see fit. This will allow you to set up the optimal software environment for all of your web apps regardless of their requirements. Due to the popularity of the OS, Ubuntu has huge developer and user communities, which means that you'll always find find lots of materials on the world wide web related to any question or problem that you might have.