AWS CloudFormation is extending change sets to support applications modeled with nested stacks, enhancing the predictability of update operations. With this launch, you can now preview the changes to your application and infrastructure resources across the entire nested stack hierarchy and proceed with the update only when you confirm that all the changes are as intended.
When you create a change set with this feature enabled, CloudFormation automatically creates a change set for each nested stack contained in the hierarchy. Each of these change sets contains changes to the resources contained in the stack as well as links to change sets of stacks nested within it.
Using these links for navigation, you can view the changes across the entire hierarchy. After examining all the changes, you can either choose to proceed with the create or update operation or start over.
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