Restrict AWS Org to Regions

manifest.yaml

# Landing Zone Service Control Policies
organization_policies:
  ...
  - name: restrict-to-eu
    description: Restrict to EU regions
    policy_file: policies/restrict_to_eu_regions.json
    #Apply to accounts in the following OU(s)
    apply_to_accounts_in_ou:
      - core
      - applications

restrict_to_eu_regions.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "DenyAllOutsideEU",
            "Effect": "Deny",
            "NotAction": [
                "cloudfront:*",
                "iam:*",
                "route53:*",
                "support:*",
                "billing:*",
                "cloudtrail:*",
                "a4b:*",
                "budgets:*",
                "ce:*",
                "chime:*",
                "cur:*",
                "globalaccelerator:*",
                "health:*",
                "importexport:*",
                "mobileanalytics:*",
                "organizations:*",
                "shield:*",
                "trustedadvisor:*",
                "waf:*",
                "wellarchitected:*"
            ],
            "Resource": "*",
            "Condition": {
                "StringNotEquals": {
                    "aws:RequestedRegion": [
                        "eu-central-1",
                        "eu-west-1"
                    ]
                }
            }
        }
    ]
}