## How-To Video [![Watch the video](https://img.youtube.com/vi/0rymMbEYNiY/maxresdefault.jpg)](https://youtu.be/0rymMbEYNiY) ## Prerequisites None ## Usage ``` aws cloudformation create-stack --stack-name --template-body file://alert-on-manual-tag-modifications.json --parameters ParameterKey=pProtectedTags,ParameterValue= ParameterKey=pEmailSubscription,ParameterValue= --capabilities CAPABILITY_NAMED_IAM ``` Example ``` aws cloudformation create-stack --stack-name alert-on-manual-tag-modifications --template-body file://alert-on-manual-tag-modifications.json --parameters ParameterKey=pProtectedTags,ParameterValue="Environment\, Hostname\, OS" ParameterKey=pEmailSubscription,ParameterValue=me@example.com --capabilities CAPABILITY_NAMED_IAM ``` ## Test Steps ### 1. Confirm subscription to the SNS Topic using the link provided via email ### 2. Create a resource with Protected Tag "Environment" via CloudFormation Usage ``` aws cloudformation create-stack --stack-name --template-body file://vpc.template ``` Example ``` aws cloudformation create-stack --stack-name vpc --template-body file://vpc.template ``` ### 3. Modify the Protected Tag "Environment" outside of CloudFormation ### 4. Confirm an email is received identifying the Protected Tag and the user who modified it