The Serverless Framework also provides the ability to update resources automatically if you call sls deploy again. We can add this as a function to the deployment bash script:

update() {
     sls deploy
 }

This command is useful if you want to update the code of some of the lambdas, but don't want to leave the session maintained by Cognito.

To remove everything we deployed, we can use the following function:

remove() {
     echo "ASSETS REMOVING"
     sls client remove
     echo "LAMBDAS REMOVING"
     sls remove
     echo "ASSETS CLEANUP"
     rm -rf assets
     mkdir assets
     touch assets/.gitkeep
 }

It works because the Serverless Framework supports removing declared resources. I recommend you clean up everything after experimenting, because AWS will produce bills for services even if you don't use this demo.