AWS CloudFormation StackSets announces the ability to deploy CloudFormation Stacks to multiple AWS regions in parallel. This reduces the overall stack set provisioning times and provides a performance improvement when using StackSets. StackSets extend the functionality of stacks by enabling you to create, update, or delete stacks across multiple AWS accounts and regions with a single operation. Currently, using StackSets you can specify the region order preference to deploy stacks across AWS regions in a sequential manner. StackSets now expands on that by providing the additional ability to specify deploying across AWS regions in parallel as part of the deployment preferences for the stack set.