I’ve been spending  a good deal of time focusing on performance issues lately. When your web properties count annual page views in the BILLIONS, it’s inevitable.

IIS 7 has great, often overlooked, granularity feature to help you hone performance and the IIS team continues to deliver in the performance space.

Check out ARR !

Application Request Routing (ARR) enables Web server administrators and hosting providers and to increase Web application reliability and scalability through rule-based routing and load balancing of HTTP server requests.

With ARR, administrators can optimize resource utilization for application servers to reduce management costs for Web farms and shared hosting environments.