AWS Certified DevOps Engineer - Professional
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A company is experiencing rapid growth and needs to scale its AWS development environments to meet increasing developer demand. Currently, these environments are manually created via the AWS Management Console. The networking team manages the networking infrastructure using AWS CloudFormation, exporting stack output values for the Amazon VPC and all subnets. Common standards for these environments include Application Load Balancers, Amazon EC2 Auto Scaling groups, security groups, and Amazon DynamoDB tables. To automate the creation of these environments and ensure they can be easily updated as the infrastructure grows, CloudFormation templates will be utilized. Which method should the DevOps engineer adopt to quickly and consistently provide AWS environments for developers?
Explanation:
The correct answer is C. Option B is incorrect because intrinsic functions like Fn::ImportValue cannot be used in the Parameters section, as per AWS documentation. The correct use of intrinsic functions should be within resource properties, outputs, metadata attributes, and update policy attributes. Option C provides the appropriate method by using nested stacks to define common infrastructure components and using Fn::ImportValue with the resources of the nested stack to retrieve VPC and subnet values. This approach also ensures that the development environments can be easily updated using the CreateChangeSet and ExecuteChangeSet commands.