http://blog.serverfault.com/2011/02/11/stack-exchanges-architecture-in-bullet-points/ http://blog.serverfault.com/2011/02/11/stack-exchanges-archi... We use Li

http://blog.serverfault.com/2011/02/11/stack-exchanges-architecture-in-bullet-points/ http://blog.serverfault.com/2011/02/11/stack-exchanges-archi... We use Linux for caching, load balancing, routing, monitoring, etc. The web tier and databases are Windows.