Site groups are created using Site Administration, and allow you to configure sites that are similar or contain similar properties. Site groups can contain a component, such as a shopping cart. When you add a shareable component to a site group, all of the sites within the site group will use the same component. A site can belong to no site groups, or can belong to many site groups. However, if desired, you can configure your multisite environment so that a site may be a member of only one site group.
For additional information on configuring site groups, refer to the ATG Multisite Administration Guide.
