Differences between OUs and containers
Before we get into the recipes, it's important for us to understand the differences between OUs and containers. OUs and containers play different roles and act differently in Active Directory.
Containers
Containers are created by default. Creating or deleting containers using the built-in tools is not supported. Containers don't support delegation or Group Policy either. Creating 
an OU is not possible in a container.
OUs
OUs can be created and deleted by Active Directory admins. They support delegation of control, using the Delegation of Control Wizard and the built-in tools. Group Policy objects and managers can be applied to OUs. OUs can be nested.
OUs versus Active Directory domains
One of the most heated discussions when setting up and/or extending Active Directory environments is to create OUs for departments, locations, and/or organizations. Please refer to the Choosing between a new domain or forest recipe...