Migration Infrastructure Teardown - opensearch-project/opensearch-migrations GitHub Wiki
After a migration is complete all resources should be removed except for the target cluster, and optionally your Cloudwatch Logs, and Replayer logs.
To remove all the CDK stack(s) which get created during a deployment you can execute a command similar to below within the CDK directory
cdk destroy "*" --c contextId=<CONTEXT_ID>
Follow the instructions on the command-line to remove the deployed resources from the AWS account.
Note
The AWS Console can also be used to verify, remove, and confirm resources for the Migration Assistant are no longer in the account.