Ubuntu is an extremely popular Operating System, that makes use of the Linux kernel. Even though it is used primarily on desktop machines, its server version has been rising in popularity lately as well. Ubuntu is one of the lightest Linux releases out there and it's compatible with almost any hardware, that 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're able to receive official safety and performance updates. Unlike alternative OS's, Ubuntu is distributed without license fees and you're able to customize its core, and any of the numerous packages it contains, in any way you see fit. This allows you to install the perfect software environment for your web apps regardless of their specifications. As a result of the popularity of the OS, Ubuntu has huge developer and user communities, so you can always find find lots of materials online regarding any question or problem which you may have.