You have created multiple S3 buckets using AWS CloudFormation Templates. You have added a DeletionPolicy for each template to clean up all S3 buckets created during stack creation and deletion. Upon some research, you find that some S3 buckets are not getting deleted. Which of the following could be the reason?

Answer options:

A.Default DeletionPolicy for Amazon S3 bucket is Retain.
B.Ensure that all objects in S3 buckets are deleted before bucket is deleted.
C.Ensure that CloudFormation Stack has permissions to delete S3 buckets.
D.Modify DeletionPolicy to delete S3 bucket after stack is deleted.

Correct Answer – B
For Amazon S3 buckets, we need to ensure that all objects are deleted before deleting S3 buckets by DeletionPolicy of CloudFormation Template.
Option A is incorrect as Default DeletionPolicy for Amazon S3 bucket is Delete.
Option C is incorrect as even though AWS CloudFormation has permission to delete S3 buckets, we need to ensure that no objects are present in S3 buckets before deleting the S3 bucket.
Option D is incorrect as the Default option for DeletionPolicy for S3 buckets is to delete S3 buckets once Stack is deleted. But you need to ensure that all objects in S3 buckets are deleted to delete the S3 bucket.
For more information on DeletionPolicy with CloudFormation templates, refer to the following URL-
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html