Go to the CloudFormation console.
Click on the name of the MSK Cluster Stack that you created earlier.
In the upper right hand corner, click on Delete.
When asked to confirm, click on Delete stack.
Repeat the steps above for the Cloud9 Bastion CloudFormation stack that you created earlier. Make sure you select the Root stack and not the Nested Stacks.
Go to the ACM Console.
Click on Private CAs in the left pane.
Select the Private CA you created in the Setup section of this lab.
Click on Actions, then click on Disable.
Click on Disable.
Click on I understand the risk, continue.
Click on Actions, then click on Delete.
Change the CA restore period to 7. Click on Delete.