Using a Centralized Administrative Model

In a centralized model, one or several controlled administrative groups maintain complete control of the Exchange system. For example, the following figure shows how Contoso's administrative group in Seattle has complete control over the Exchange system of the company.

Centralized administrative model

This administrative model is similar to a data center where all administration tasks are performed by a single information technology group. This administrative model is typical in small-sized or medium-sized organizations, but can also be used in larger organizations that have high-bandwidth connectivity to all regional offices.