Which approach addresses this requirement?

Your team Is excited about theuse of AWS because now they have access to programmable
Infrastructure” You have been asked to manage your AWS infrastructure In a manner similar to
the way you might manage application code You want to be able to deploy exact copies of
different versions of your infrastructure, stage changes into different environments, revert back to
previous versions, and identify what versions are running at any particular time (development test
QA. production).
Which approach addresses this requirement?

A.
Use cost allocation reports and AWS Opsworks to deploy and manage your infrastructure.

B.
Use AWS CloudWatch metrics and alerts along with resource tagging to deploy and manage
your infrastructure.

C.
Use AWS Beanstalk and a version control system like GIT to deploy and manage your
infrastructure.

D.
Use AWS CloudFormation and a version control system like GIT to deploy and manage your
infrastructure.

Explanation:
http://aws.amazon.com/opsworks/faqs/