Debian is a preferred Linux release, that's used mainly on personal computers, still numerous people have started using it lately as a web server OS too, because of the stability and protection it provides. The latter is a consequence of the fact that Debian is developed and supported by numerous qualified volunteers around the globe, therefore any patch that's necessary to fix some issue is released within a matter of days. The same community can also help with any question or trouble which a user may ever encounter, due to the fact that they can be contacted via e-mail using e-mail lists and a qualified response will be sent in no more than 15-20 minutes. The advantage here is that your queries will be replied by the same people who have designed the Operating System itself and they have a detailed knowledge of how it works. As Debian is absolutely free, you will not need to pay any kind of license fees to use it and you can personalize it as much as you want or need. This is valid for the Operating System as well as the 30.000+ software packages that are available for it.