Now use AWS Systems Manager Maintenance Windows to select resource groups as targets

AWS Systems Manager Maintenance Windows enable you to define a time window for performing potentially disruptive actions on your instances. You can now use maintenance windows to select a resource group as the target. Resource groups make it easier to organize, manage, and automate tasks on large numbers of resources at one time. By selecting a resource group as the target of a maintenance window, you can perform routine tasks across different resources such as Amazon Elastic Compute Cloud (Amazon EC2) instances, Amazon Elastic Block Store (Amazon EBS) volumes, and Amazon Simple Storage Service (Amazon S3) buckets within the same recurring time window.  



https://aws.amazon.com/about-aws/whats-new/2019/07/now-use-aws-systems-manager-maintenance-windows-to-select-resource-groups-as-targets/