# Teardown
Teardown

**Note**  
Please make sure you empty s3 buckets before deletion of CidDataCollectionStack.

1. In the Data Collection Account, go to S3 and search for bucket names that contain "costoptimization" or cid-data, select the radio button next to the bucket name and then click **Empty**.

1. Navigate to CloudFormation console and search for the Stack named **CidDataCollectionStack**, select the radio button next to the Stack and click **Delete**.

1. In the Management Account, go to CloudFormation Console and search for Stack named **CidDataCollectionReadPermissionsStack**, select the radio button next to the Stack and click **Delete**. This will delete IAM Role created in Management Account to be assumed by Lambda for reading data.