Hi  Aouatef,

Thanks for reaching out. This is Mate here from the Databricks product team.

To delete your Databricks workspace you need to do the following steps.

1. Log in to your account in accounts.cloud.databricks.com and navigate to Workspaces.
2. On the right hand side in the table click the ellipsis icon and select Delete.
3. Confirm delete in the modal and wait a few minutes, your workspace should be deleted.
4. Then log in to your AWS console and navigate to Cloudformation.
5. When trying to delete the Cloudformation stack you might encounter an error because the root S3 bucket is not empty. To solve this please navigate to S3 -> locate the root bucket that was created by Cloudformation -> click "Empty bucket". (Please make sure you're emptying the correct bucket as this will delete all information).
6. After the bucket has been emptied you should be able to successfully delete the Cloudformation stack - which should delete all Databricks related resources in AWS.

I hope this helps. Please let us know if you have any further questions.