The concept behind the ______________ is that a number of different web sites share pooled resources. They typically share a common front-end dispatcher to perform load control and distribute customer requests. They share the multiple web servers themselves.
The Microsoft Web Farm Framework enables you to easily define a “Server Farm” that you can add any number of servers into. Servers participating in the “Server Farm” will then be automatically updated, provisioned and managed by the Web Farm Framework.
What this means is that you can install IIS (including modules like UrlRewrite, Media Services, etc), ASP.NET, and custom SSL certificates once on a primary server – and then the Web Farm Framework will automatically replicate and provision the exact same configuration across all of the other web servers in the farm (no manual or additional steps required).