To delete your Auto Scaling group using the console
When you are finished using your EC2 Fleet, you can delete the EC2 Fleet and terminate all of the running instances.
To delete your EC2 Fleet and terminate the running instances
$ aws ec2 delete-fleets --fleet-ids fleet-e678bfc6-c2b5-4d9f-8700-03b2db30b183 --terminate-instances
When you are finished using your Spot Fleet, you can cancel the Spot Fleet request. This cancels all Spot requests associated with the Spot Fleet, so that no new Spot Instances are launched for your Spot Fleet. You must specify whether the Spot Fleet should terminate its Spot Instances. If you terminate the instances, the Spot Fleet request enters the cancelled_terminating state. Otherwise, the Spot Fleet request enters the cancelled_running state and the instances continue to run until they are interrupted or you terminate them manually.
To cancel a Spot Fleet request using the console
To terminate a Spot Instance using the console
If you no longer require a launch template, you can delete it. Deleting a launch template deletes all of its versions.
To delete a launch template