Debian is a Linux release, which is widely used for desktop computers, but it has been becoming more popular as a server Operating System during the last couple of years as well. It's really stable and protected, as fixes are released in a few days after an issue is discovered. Debian has a vast support community, so when you have any kind of questions or issues with the OS or with some of the 30,000+ packages it features, you will be able to contact the developers immediately via electronic mail using special mailing lists and receive a response within 15-20 minutes. The Debian community supplies the best level of support possible, because all of your questions will be handled by the same people who built Debian in the first place, so they have an exhaustive knowledge of how their system functions. Since the Operating System is free to use and distribute, no license costs will be included with your hosting fees and you will be able to customize the code files and any other software which you install without any restrictions, in order to optimize the software environment for your Internet sites. What's more, Debian performs really well on any hardware, as it's light and efficient and does not require a lot of memory.