Exam AWS DevOps Engineer Professional topic 1 question 52 discussion

D seems a better choice among others "in a specific order." => Nested Stack guarantee

Nested stack for order and sns for notification

Option C is the best choice to accomplish the company's goals. With CloudFormation StackSets, the company can deploy the same set of CloudFormation templates to multiple accounts and regions at once. The StackSets can be used to maintain the ordering of the templates while allowing changes to be deployed more efficiently across multiple accounts and regions. In addition, StackSets can use drift detection, which can detect differences between the expected and actual stack configuration in each account and region. If a drift is detected, it can trigger an update of the affected stack, which can then notify the data engineering team of any changes made to the templates. Option A may be used to deploy the templates in order but may not be efficient for deploying changes. Option B may work for triggering CloudFormation updates and SNS notifications but may not maintain the required order of deployment. Option D may work for notifications but may not handle the required ordering of deployment or efficiently deploy changes.

D is the right answer

I go with D

Stack Sets will take care of the multi-region ordered deployment. and I don't see the need for nested stack