Managing an organization with AWS Organizations
An organization is a collection of AWS accounts that you can manage centrally and organize into a hierarchical, tree-like structure with a root at the top and organizational units nested under the root. Each account can be directly in the root, or placed in one of the OUs in the hierarchy.
Each organization consists of:
A management account
Zero or more member accounts
Zero or more organizational units (OUs)
Zero or more policies.
An organization has the functionality that is determined by the feature set that you enable.