AWS CloudFormation StackSets launched a new feature that allows you to deploy stack sets to selected AWS accounts in an Organizational Unit (OU) in a single operation. You can use this feature to target or skip stack sets deployment to AWS accounts within an OU. For example, you can use this feature to skip deployment of an AWS Config policy in AWS accounts that already have the policy within an OU. In a few clicks, you can re-deploy stack sets to those AWS accounts in which the earlier stack sets deployment had failed. Similarly, you can skip stack set deployment to suspended AWS accounts in an OU.
Source:: Amazon AWS