Default Amazon Elastic Compute Cloud (Amazon EC2) launch template

The default Amazon EC2 launch template sets the default values that will be copied to EC2 templates created for newly added source servers. This template defines how drill, recovery, or failback instances are launched. If you didn't create any default EC2 template, AWS DRS will copy the default values for each setting to EC2 launch templates for newly added servers.

You can usually launch a drill instance without modifying the automatically created EC2 launch template (unless you have removed the default VPC/subnet from your AWS account).