Ubuntu is an exceptionally popular OS, which uses the Linux kernel. Though it's used mainly on desktop machines, its server version has been rising in popularity these days as well. Ubuntu is one of the lightest Linux distributions available and it supports almost any kind of hardware, that makes it a universal Operating System. It's also very stable and secure and has an at least a 5-year support life cycle, so you are able to receive official security and performance updates. Unlike lots of other Operating Systems, Ubuntu is distributed with no license fees and you will be able to customize its core, and all of the thousands of packages it contains, in any way you see fit. This allows you to set up the perfect software environment for all your web applications irrespective of their requirements. Because of the popularity of the Operating System, Ubuntu has large developer and user communities, so that you'll always find find lots of materials online related to any question or problem that you might have.