The Microsoft Web Farm Framework is a free product from Microsoft that enables you to easily provision and manage a farm of web servers.  It allows you to automate the installation and configuration of platform components across a group of web servers, and enables you to automatically synchronize and deploy ASP.NET applications across them.  It also supports integration with Windows load balancers – and enables you to automate updates across your servers so that your site/application is never down or unavailable to customers (it can automatically pull servers one-at-a-time out of the load balancer rotation, update them, and then inject them back into rotation).

Click here for more information about Microsoft Web Farm framework.

To get more information about the v2.0 of the framework, you can visit Scott’s blog.