After you have created a CloudFormation stack, you may want to make changes to the stack, such as adding additional resources, or changing the configuration of existing resources. CloudFormation defines three key life cycle events related to stacks – CREATE, UPDATE, and DELETE – and these can apply to individual resources within the stack, or to the stack as a whole.
To update a stack, you simply make any required changes to your CloudFormation template and submit the modified template—the CloudFormation service will calculate the required changes for each resource, which may result in the creation of new resources, updating or replacement of existing resources, or deletion of existing resources. CloudFormation ...
