sls deploy list [functions] command will list information about your deployments.
You can either see all available deployments in your COS deployment bucket by running
serverless deploy list or you can see the deployed functions by running
serverless deploy list functions.
The displayed information is useful when rolling back a deployment or function via
-sThe stage in your service that you want to deploy to.
-rThe region in that stage that you want to deploy to.
serverless deploy list
serverless deploy list functions