OU design requires balancing requirements for delegating administrative rights independent of Group Policy needs, and the need to scope the application of Group Policy. You can create OUs within a domain and delegate administrative control for specific OUs to particular users or groups. By using a structure in which OUs contain homogeneous objects, such as either user or computer objects but not both, you can easily disable those sections of a GPO that don't apply to a particular type of object. This approach to OU design reduces complexity and improves the speed at which Group Policy is applied. GPOs linked to the higher layers of the OU structure are inherited by default for OUs at the lower layer, reducing the need to duplicate GPOs or to link a GPO to multiple containers.