Debian is a preferred Linux release, which is used mainly on desktop machines, however a lot of people have begun using it lately as a web server Operating System too, due to the stability and protection it provides. The latter is a consequence of the fact that Debian is developed and supported by countless qualified volunteers all around the world, so any patch that is necessary to fix a particular issue is released within a few days. The same community will also help with any question or problem that a user may ever have, since they can be contacted through e-mail using mailing lists and a competent response will be sent in no more than 15-20 minutes. The advantage here is that all of your queries will be responded to by the same people who have designed the Operating System itself and they have an in-depth knowledge of how it functions. As Debian is provided for free, you won't need to pay any license fees to use it and you can customize it as much as you want or need. This is valid for both the Operating System as well as the 30.000+ software packages which are available for it.