Exchange Messaging Infrastructure

The Exchange Server messaging infrastructure provides certain core services that enable you to focus on developing value-added services rather than essential ones. This infrastructure complements current network topologies and protocols and, as you’ll see, guarantees that every message gets through to its destination. The following sections discuss some of the advantages of the Exchange Server messaging infrastructure.

Least-Cost Routing, Load Balancing, and Failover

Technologies in the Exchange Server messaging engine allow organizations to define different communication routes between Exchange servers. Costs can be assigned to these different routes, and the least costly route is always attempted first by the Exchange server. If this route is not available, Exchange Server will fail over to the next least costly route. If you assign the same cost to two routes, Exchange Server will distribute the communications traffic evenly over both routes, thereby load balancing the connections.