Earlier quoted context omitted.
Sorry, a database-backed web app works just fine on a Microsoft stack, there are thousands of them out there and I say that as someone who vastly prefers unix but this is clearly a project management fiasco and architecture design fiasco, not a technology stack fundamentally unable to handle the demands.
I agree the MS stack works fine in the dev lab.
http://blog.stackoverflow.com/2008/09/what-was-stack-overflo... http://highscalability.com/blog/2011/3/3/stack-overflow-arch...