what architecture to use with asp.net mvc vd web forms

please explain how to get high capacity architectures with both the default asp.net web forms and mvc models with regard to being able to serve millions of page views.

i want to know how to set up each model from DB clustering, to caching, logical/ physical tiers, load balancing iis servers, scaling out or up, session state management and so on...

is one more scalable than the other?

thanks all.

There is no one answer. A good option is to check the architectures for some respected Open source projects to see what other people are doing.