The next major concept to understand relates to segments. Governance segments can be thought of as the three dimensions of system management. Each segment covers a set of activities that must be performed to effectively govern the site. These segments provide a useful means of categorizing these activities and understanding how they are related to one another.
As shown in Figure 2-2, the three segments are Information Management, IT Management, and Application Management. Each service deployed in a SharePoint solution needs to be evaluated from the point of view of each of these segments.