Debian is a Linux release, which is widely used for desktop computers, however it's been gaining in popularity as a server OS over the last few years as well. It is really dependable and risk-free, as fixes are released in just a few days after an issue is discovered. Debian has a vast support community, so when you have any questions or troubles with the OS or with some of the 30,000+ packages it comes with, you'll be able to contact the developers right away via email using special mailing lists and receive a response in just 15-20 minutes. The Debian community supplies the top level of support possible, since your questions will be handled by exactly the same people that built Debian in the first place, so they have an exhaustive knowledge of how their own system functions. As the Operating System is 100% free to use and distribute, no license costs will be included with your web hosting fees and you'll be able to modify the code files and any additional software that you install without restrictions, to optimize the software environment for your Internet sites. In addition, Debian performs very well on any hardware, because it's light and efficient and doesn't need a lot of memory.