AWS::Organizations::Organization

• Allow managing multiple AWS accounts
• In AWS either you have one organization or have none, you cannot have multiple organizations. Instead you can have multiple Organizational Units (OU) for your organization
• An organization always have a management account (formerly known as "master account") and optionally multiple member accounts

Hierarchy

• An Organization contains Organization Units which contains Accounts
• The Root OU of an organization is automatically created and cannot be removed

Consolidated Billing

• An account consolidates billing across all accounts (single payment method)
• With that you benefit from volume discounts for EC2, S3, etc

Properties

• https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-organizations-organization.html

Type: AWS::Organizations::Organization
Properties:
  FeatureSet: String