A company is developing a web application's infrastructure using AWS CloudFormation The database engineering team maintains the database resources in…

Stack Export and Import:

Use the Export feature in CloudFormation to share outputs from one stack (e.g., database resources)

and use them as inputs in another stack (e.g., web application resources).

Steps to Create Stack Export:

Define the resources in the database CloudFormation template and use the Outputs section to

export necessary values.

Outputs:

DBInstanceEndpoint:

Value: !GetAtt DBInstance.Endpoint.Address

Export:

Name: DBInstanceEndpoint

Steps to Import into Web Application Stack:

In the web application CloudFormation template, use the ImportValue function to import these

exported values.

Resources:

MyResource:

Type: "AWS::SomeResourceType"

Properties:

SomeProperty: !ImportValue DBInstanceEndpoint

Resource-Level Change-Set Reviews:

Both teams can continue using their respective review processes, as changes to each stack are

managed independently.

Use CloudFormation change sets to preview changes before deploying.

By exporting resources from the database stack and importing them into the web application stack,

both teams can maintain their separate review and lifecycle management processes while sharing

necessary resources.

Reference:

AWS CloudFormation Export

AWS CloudFormation ImportValue