Free AWS Certified Developer Associate DVA-C02 Practice Question

The best practice when integrating new resources into an existing environment is to add the new resource definitions in the Resources section of the CloudFormation template. This ensures that the new virtual servers are created without impacting the existing infrastructure. It's important not to modify existing resource definitions directly if the intent is to add additional resources rather than to replace them. Modifying the UpdatePolicy may be useful for controlling how updates are applied to certain resource types that support rolling updates, but it alone does not add new resources. The Mappings and Conditions sections serve different purposes; they define environment-specific parameters and conditional logic for resource creation and are not directly responsible for adding new instances.