Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 115 discussion

A. Use the AWS::Region pseudo parameter.

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/mappings-section-structure.html AWS::Region is a pseudo parameter that automatically provides the Region where the stack is being deployed (e.g., us-east-1 if deploying in the US East Region). B) Eliminated - Adding a parameter for the Region means users would need to manually specify the Region every time they deploy the template C) Eliminated - While the stack ID contains the Region as part of its value (e.g., arn:aws:cloudformation:us-east-1:123456789012:stack/MyStack/...), extracting it with Fn::Split is a complicated workaround. D) Eliminated

Resources: MyS3Bucket: Type: "AWS::S3::Bucket" Properties: BucketName: !Sub "my-bucket-${AWS::Region}"

A is the correct answer.

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/pseudo-parameter-reference.html

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/pseudo-parameter-reference.htmlhttps://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/pseudo-parameter-reference.html

The AWS::Region pseudo parameter is a built-in CloudFormation parameter that automatically resolves to the AWS Region where the CloudFormation stack is being created. By using this pseudo parameter, you can dynamically access the current Region without requiring any additional configuration or input.