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organization-resources.md

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Managing your AWS Organization as code

Why this is important

Just like with the resources within your AWS Account, managing AWS Organization resources as code allows you to apply changes automatically, reducing manual work, inconsistencies and mistakes.

If you are considering to use an account vending machine (e.g. AWS Control Tower) to create and manage new accounts within your organization: Do realize that the account vending machine allows you to quickly create organization resources but only has limited facilities when it comes to updating and maintaining these resources.

Example Template

AWSTemplateFormatVersion: '2010-09-09-OC'

Organization:
  Root:
    Type: OC::ORG::MasterAccount
    Properties:
      AccountName: My Organization Root
      AccountId: '123123123123'
      Tags:
        budget-alarm-threshold: '2500'
        account-owner-email: [email protected]

  OrganizationRoot:
    Type: OC::ORG::OrganizationRoot
    Properties:
      ServiceControlPolicies:
        - !Ref RestrictUnusedRegionsSCP

  ProductionAccount:
    Type: OC::ORG::Account
    Properties:
      RootEmail: [email protected]
      AccountName: Production Account
      Tags:
        budget-alarm-threshold: '2500'
        account-owner-email: [email protected]

  DevelopmentAccount:
    Type: OC::ORG::Account
    Properties:
      RootEmail: [email protected]
      AccountName: Development Account
      Tags:
        budget-alarm-threshold: '2500'
        account-owner-email: [email protected]

  DevelopmentOU:
    Type: OC::ORG::OrganizationalUnit
    Properties:
      OrganizationalUnitName: development
      Accounts:
        - !Ref DevelopmentAccount

  ProductionOU:
    Type: OC::ORG::OrganizationalUnit
    Properties:
      OrganizationalUnitName: production
      Accounts:
        - !Ref ProductionAccount

  RestrictUnusedRegionsSCP:
    Type: OC::ORG::ServiceControlPolicy
    Properties:
      PolicyName: RestrictUnusedRegions
      Description: Restrict Unused regions
      PolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Sid: DenyUnsupportedRegions
            Effect: Deny
            NotAction:
              - 'cloudfront:*'
              - 'iam:*'
              - 'route53:*'
              - 'support:*'
            Resource: '*'
            Condition:
              StringNotEquals:
                'aws:RequestedRegion':
                  - eu-west-1
                  - us-east-1
                  - eu-central-1

List of Resource Types

Organization Formation supports the following AWS Organization resources:

MasterAccount

MasterAccount is the AWS Account that functions as the master account within your organization.

Type OC::ORG::MasterAccount

Properties

Property Value Remarks
AccountName Name of the master account This property is required.

Changing the name of the AWS MasterAccount resource is not possible, this requires the root account to log in to the master account and change this manually.

However, it is possible to change the AccountName of the MasterAccount in the template and this change will be reflected when doing a !GetAtt on the resource from within a template.
AccountId AccountId of the master account This property is required.

Changing the AccountId of the master account is not supported.
RootEmail RootEmail of the master account This property is optional.

Changing the RootEmail of the MasterAccount AWS resource is not possible, this requires the root account to log in to the master account and change this manually.

However, it is possible to change the RootEmail of the MasterAccount in the template and this change will be reflected when doing a !GetAtt on the resource from within a template.
ServiceControlPolicies Reference or list of References This property is optional.

Reference or list of References to ServiceControlPolicy resources that must be enforced on the MasterAccount
PasswordPolicy Reference This property is optional.

Reference to the PasswordPolicy resource that must be enforced on the MasterAccount.
Alias IAM alias This property is optional.

The IAM Alias associated with the account. Organization Formation supports a maximum of 1 IAM alias per account
Tags Dictionary This property is optional.

Dictionary that contains the tags on the MasterAccount resource

Example

    Type: OC::ORG::MasterAccount
    Properties:
      Alias: org-formation-master
      AccountName: My Organization Formation Master Account
      AccountId: '123456789012'
      ServiceControlPolicies: !Ref ServiceControlPolicy
      PasswordPolicy: !Ref PasswordPolicy
      Tags:
        tag1: Value of Tag
        tag2: Value of Tag 2

!Ref Returns the AccountId of the MasterAccount resource.

!GetAtt <logicalId>.AccountName returns the AccountName of the MasterAccount resource.

!GetAtt <logicalId>.Alias returns the IAM alias of the MasterAccount resource.

!GetAtt <logicalId>.AccountId returns the AccountId of the MasterAccount resource.

!GetAtt <logicalId>.RootEmail returns the RootEmail of the MasterAccount resource.

!GetAtt <logicalId>.Tags.<Key> returns the value of tag <Key> for the MasterAccount resource.

Account

Account is an AWS Account within your organization.

Type OC::ORG::Account

Properties

Property Value Remarks
AccountName Name of the account This property is required.

Changing the name of the AWS Account resource is not possible, this requires the root account to log in to the account and change this manually.

However, it is possible to change the AccountName of the Account in the template and this change will be reflected when doing a !GetAtt on the resource from within a template.
AccountId AccountId of account This property is optional.

Changing the AccountId of the account is not supported
RootEmail RootEmail of the account This property is optional (only if AccountId is specified)

Changing the RootEmail of the Account AWS resource is not possible, this requires the root account to log in to the master account and change this manually.

However, it is possible to change the RootEmail of the MasterAccount in the template and this change will be reflected when doing a !GetAtt on the resource from within a template.
ServiceControlPolicies Reference or list of References This property is optional.

Reference or list of References to ServiceControlPolicy resources that must be enforced on the Account.
PasswordPolicy Reference This property is optional.

Reference to the PasswordPolicy resource that must be enforced on the Account.
Alias IAM alias This property is optional.

The IAM Alias associated with the account. Organization Formation supports a maximum of 1 IAM alias per account
Tags Dictionary This property is optional.

Dictionary that contains the tags on the Account resource
SupportLevel 'enterprise' (or empty) This property is optional.

When changed a ticket will be created to change the support level of the account.

Value must be same as master account support level in AWS
OrganizationAccessRoleName String Name of the role that needs to be used when accessing this account.

If account gets created with a non-default value for this attribute the role will be created in the account.

Otherwise, when changing this value you are expected to set up the role yourself

Note When creating an account the RootEmail and AccountName are used to create the Account resource in AWS. The AccountId property can later be added as a means of ‘documentation’ but this is not required.

!Ref Returns the AccountId of the Account resource.

!GetAtt <logicalId>.AccountName returns the AccountName of the Account resource.

!GetAtt <logicalId>.Alias returns the IAM alias of the Account resource.

!GetAtt <logicalId>.AccountId returns the AccountId of the Account resource.

!GetAtt <logicalId>.RootEmail returns the RootEmail of the Account resource.

!GetAtt <logicalId>.Tags.<Key> returns the value of tag <Key> for the Account resource.

Example

  MyAccount1:
    Type: OC::ORG::Account
    Properties:
      RootEmail: [email protected]
      Alias: org-formation-account-1
      AccountName: Org Formation Sample Account 1
      AccountId: '123456789012'
      ServiceControlPolicies: !Ref ServiceControlPolicy
      PasswordPolicy: !Ref PasswordPolicy
      Tags:
        tag1: Value of Tag
        tag2: Value of Tag 2

OrganizationRoot

OrganizationRoot is the AWS Root Resource that functions like a top-level Organizational Unit within your Organization.

Type OC::ORG::OrganizationRoot

Properties

Property Value Remarks
ServiceControlPolicies Reference or list of References This property is optional.

Reference or list of References to ServiceControlPolicy resources that must be enforced on all accounts (including master account) within the AWS Organization.
DefaultOrganizationAccessRoleName String Default value for the OrganizationAccessRoleName attributes of accounts within the organization.

For more information see the Account resources
DefaultBuildAccessRoleName String Default value for the TaskRoleName of tasks, this value can be different from the DefaultOrganizationAccessRoleName value. OrganizationAccess is used to set up the account, BuildProcessAccess is used to deploy resources to these accounts.
CloseAccountsOnRemoval boolean If set to true, Account resources removed from organization.yml will be closed.
DefaultDevelopmentBuildAccessRoleName String When configured, this value will be used instead of DefaultBuildAccessRoleName when running using the --dev flag

Note Any account (or master account) within an AWS organization that is not part of an Organizational Unit will be a member of the Organizational Root.

!Ref Returns the physical id of the OrganizationRoot resource.

Example

  OrganizationRoot:
    Type: OC::ORG::OrganizationRoot
    Properties:
      ServiceControlPolicies:
        - !Ref DenyChangeOfOrgRoleSCP
        - !Ref RestrictUnusedRegionsSCP

OrganizationalUnit

OrganizationalUnit is an AWS Organizational Unit within your organization and can be used to group accounts and apply policies to the accounts within the organizational unit.

Type OC::ORG::OrganizationalUnit

Properties

Property Value Remarks
OrganizationalUnitName Name of the organizational unit This property is required.
Accounts Reference or list of References This property is optional.

Reference or list of References to Account resources that need to be part of the Organizational Unit.
ServiceControlPolicies Reference or list of References This property is optional.

Reference or list of References to ServiceControlPolicy resources that must be enforced on all accounts (including master account) within the AWS Organization.
OrganizationalUnits Reference or list of References This property is optional.

Reference or list of References to OrganizationalUnit resources that must be nested within the current OrganizationalUnit.

!Ref Returns the physical id of the OrganizationalUnit resource.

Example

  DevelopmentOU:
    Type: OC::ORG::OrganizationalUnit
    Properties:
      OrganizationalUnitName: development
      ServiceControlPolicies:
        - !Ref DenyChangeOfOrgRoleSCP
      Accounts:
        - !Ref DevelopmentAccount1
        - !Ref DevelopmentAccount2

ServiceControlPolicy

ServiceControlPolicy is an AWS Service Control Policy that can be used to manage permissions within the accounts contained in your organization.

Type OC::ORG::ServiceControlPolicy

Properties

Property Value Remarks
PolicyName Name of the SCP This property is required.
Description Description of the SCP This property is optional.
PolicyDocument Policy Document This property is optional.

!Ref Returns the physical id of the ServiceControlPolicy resource.

Example

  RestrictUnusedRegionsSCP:
    Type: OC::ORG::ServiceControlPolicy
    Properties:
      PolicyName: RestrictUnusedRegions
      Description: Restrict Unused regions
      PolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Sid: DenyUnsupportedRegions
            Effect: Deny
            NotAction:
              - 'cloudfront:*'
              - 'iam:*'
              - 'route53:*'
              - 'support:*'
            Resource: '*'
            Condition:
              StringNotEquals:
                'aws:RequestedRegion':
                  - eu-west-1
                  - us-east-1
                  - eu-central-1

PasswordPolicy

PasswordPolicy is an AWS IAM Password Policy that applies to all IAM Users within the account.

Type OC::ORG::PasswordPolicy

Properties

Property Value Remarks
MaxPasswordAge number This property is optional.
MinimumPasswordLength number This property is optional.
RequireLowercaseCharacters boolean This property is optional.
RequireNumbers boolean This property is optional.
RequireSymbols boolean This property is optional.
RequireUppercaseCharacters boolean This property is optional.
PasswordReusePrevention number This property is optional.
AllowUsersToChangePassword boolean This property is optional.

Example

  PasswordPolicy:
    Type: OC::ORG::PasswordPolicy
    Properties:
      MaxPasswordAge: 30
      MinimumPasswordLength: 12
      RequireLowercaseCharacters: true
      RequireNumbers: true
      RequireSymbols: true
      RequireUppercaseCharacters: true
      PasswordReusePrevention: 5
      AllowUsersToChangePassword: true