Debian is a Linux release, that's preffered for desktop computers, however it has been becoming more popular as a server Operating System over the last couple of years as well. It is very dependable and protected, because fixes are released in a couple of days after a problem is discovered. Debian has a large support community, so if you have any kind of questions or problems with the OS or with any of the 30,000+ packages it is equipped with, you will be able to contact the developers right away through electronic mail using special e-mail lists and receive a reply in just 15-20 minutes. The Debian community provides the best level of support possible, as all of your questions will be handled by the very same people that made Debian in the first place, so they have a thorough knowledge of how their own system operates. Since the Operating System is absolutely free to use and distribute, no license charges will be added to your website hosting fees and you can customize the code files and any additional software that you install without restrictions, to optimize the software environment for your web sites. Furthermore, Debian performs really well on any hardware, as it's light and efficient and doesn't need a lot of memory.