Your company is currently managing the deployment of its applications using Code Deploy. They want to automate the deployment of the Code Deploy environment itself. Which of the following service can help you achieve this?

Answer options:

A.AWS Cloudformation
B.AWS Cloudwatch
C.AWS Elastic Beanstalk
D.AWS Config

Answer - A
This is mentioned in the AWS Documentation.
AWS CloudFormation is a service that helps you model and set up your AWS resources using templates. An AWS CloudFormation template is a text file whose format complies with the JSON standard. You create a template that describes all of the AWS resources you want, and AWS CloudFormation takes care of provisioning and configuring those resources for you.
Option B is incorrect because Cloudwatch is a monitoring service and does not help to automate the deployment.
Option C is incorrect because Elastic Beanstalk cannot automate the deployment for the CodeDeploy service.
Option D is incorrect because AWS Config is not a service to automate the deployments.
For more information on using Cloudformation templates for CodeDeploy, please refer to the below URL-
https://docs.aws.amazon.com/codedeploy/latest/userguide/reference-cloudformation-templates.html