I don't think it is possible for a company as large as Google to completely avoid using Windows products. As an example, here is the video of the tour of Google

I don't think it is possible for a company as large as Google to completely avoid using Windows products. As an example, here is the video of the tour of Google's Data Center and around the 1:08 mark, you can clearly see them using Windows XP [1]. However if you meant to say they don't use it in their core services, I can imagine that. [1] http://www.youtube.com/watch?v=wNyFhZTSnPg http://www.youtube.com/watch?v=wNyFhZTSnPg