Debian is a popular Linux release, which is used mainly on personal computers, still a lot of people have begun using it lately as a web server Operating System as well, due to the stability and security it supplies. The latter is a result of the fact that Debian is developed and supported by a large number of qualified volunteers worldwide, which means that any patch that is necessary to fix a certain issue is released in a matter of days. The very same community can also help with any question or problem which a user may ever have, since they can be contacted through e-mail using e-mail lists and a qualified response will be sent in no more than 15-20 min. The advantage here is that all of your questions will be addressed by the same people who have designed the Operating System itself and they have an in-depth knowledge of how it works. As Debian is free, you will not need to pay any 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 readily available for it.