Restricts sharing of resources outside of the organization using AWS Resource Access Manager (RAM)

aws-scp-ram-share.json

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "DenySharingOutsideOrganization",
            "Effect": "Deny",
            "Action": [
                "ram:AcceptResourceShareInvitation",
                "ram:AssociateResourceShare",
                "ram:CreateResourceShare",
                "ram:DeleteResourceShare",
                "ram:DisassociateResourceShare",
                "ram:RejectResourceShareInvitation",
                "ram:TagResource",
                "ram:UntagResource",
                "ram:UpdateResourceShare",
                "ram:EnableSharingWithAwsOrganization"
            ],
            "Resource": "*",
            "Condition": {
                "StringNotEquals": {
                    "aws:PrincipalOrgID": "o-1234567890"
                }
            }
        }
    ]
}