Debian is a popular Linux release, that's used mainly on PC's, still many people have begun using it lately as a web server Operating System as well, due to the stability and protection it offers. The latter is a direct result the fact that Debian is developed and supported by numerous qualified volunteers around the globe, which means that any patch that's needed to fix a certain issue is released within a couple of days. The same community will also help with any question or issue that a user may ever encounter, due to the fact that they can be contacted through electronic mail using e-mail lists and a qualified response will be sent in no more than 15-20 minutes. The advantage here is that all of your questions will be replied 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 free, you will not need to pay any kind of license fees to use it and you will be able to personalize it as much as you want or need. This is valid for both the Operating System and the 30.000+ software packages which are available for it.