White Paper Abstract:
This document summarizes that the business applications in the data center are typically built around a multitiered architecture. Separating functions on different servers (and on different layers) allows for better performance, better scalability, and a more secure design. The front-end layer typically hosts services that an external client can access from outside the campus. The application and back-end layers run Web and database services for the enterprise. The aggregation layer typically offers networking services such as load balancing and SSL offloading.