You want to share a security group ID from SecurityStack to multiple application stacks using Outputs and Imports. Which approach ensures best practice for cross-stack references?

hard📝 Application Q9 of 15

AWS - CloudFormation

AHardcode the security group ID in each application stack template.

BExport the security group ID with a unique export name and import it in each application stack using ImportValue.

CUse Ref to directly reference SecurityStack resources in application stacks.

DCreate duplicate security groups in each application stack.

Step-by-Step Solution

Solution:

Step 1: Identify best practice for sharing resources
Exporting with unique names and importing via ImportValue is the recommended method.
Step 2: Evaluate alternatives
Hardcoding risks errors; Ref cannot cross stacks; duplicating resources wastes effort and causes conflicts.
Final Answer:
Export the security group ID with a unique export name and import it in each application stack using ImportValue. -> Option B
Quick Check:
Use Export/ImportValue for shared resources = B [OK]

Quick Trick: Export once, import many for shared resources [OK]

Common Mistakes:

Hardcoding IDs causing drift
Using Ref across stacks (not allowed)
Duplicating resources unnecessarily

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You want to share a security group ID from SecurityStack to multiple application stacks using Outputs and Imports. Which approach ensures best practice for cross-stack references?

Step 1: Identify best practice for sharing resources

Step 2: Evaluate alternatives

Final Answer:

Quick Check:

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