Ubuntu is a very popular OS, which uses the Linux kernel. Although it's used mainly on personal computers, its server version has been rising in popularity these days as well. Ubuntu is among the lightest Linux distributions available and it is compatible with almost any hardware, that makes it a universal OS. 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 receive official safety and performance updates. Unlike lots of other OS's, Ubuntu is distributed with no license fees and you will be able to modify its core, or all of the numerous packages it comes with, in any way you see fit. This allows you to set up the ideal software environment for your web applications whatever their requirements. Due to the popularity of the OS, Ubuntu has large developer and user communities, which means that you'll always find find lots of materials online related to any question or problem which you may have.