I have setup FreePBX 15 Distro on AWS EC2 machine. Sometime using the Firewall rules of FreePBX I got locked out of the PBX. I want to setup the AWS Console Setup so that I can manipulate the rules directly from Console.
You might want to look into AWSFPBX, https://www.thewebmachine.net/. They have an AMI (Amazon Machine Image) that makes using FreePBX on EC2 a ton easier. Its what my company uses for our AWS hosted FreePBX.