After you have completed the workshop, in order to keep charges to a minimum, always delete resources you no longer need.
Before deleting the CloudFormation templates, Delete the Site-to-Site VPN from the VPC services console.
Delete the CloudFormation templates in reverse order:
- 2.tgw-csr.yaml (be sure you removed the Site-to-Site VPN form the VPC services first or it will fail to remove and you will have to do it again!)
- 1.tgw-vpcs.yaml (this will also removed the cloud9 stack, no need to manual delete that stack)