Your Company Needs to Automate 3 Layers of a Large

Multiple Choice

Your company needs to automate 3 layers of a large cloud deployment. You want to be able to track this deployment's evolution as it changes over time, and carefully control any alterations. What is a good way to automate a stack to meet these requirements?

A) Use OpsWorks Stacks with three layers to model the layering in your stack.
B) Use CloudFormation Nested Stack Templates, with three child stacks to represent the three logical layers of your cloud.
C) Use AWS Config to declare a configuration set that AWS should roll out to your cloud.
D) Use Elastic Beanstalk Linked Applications, passing the important DNS entires between layers using the metadata interface.