SSH
ssh -i /path/my-key-pair.pem username@instance-id
Requires >= Amazon SSM Agent - Release 2.3.672.0 - 2019-07-09
Port Forwarding
aws ssm start-session \
--target i-123456789012345678 \
--document-name AWS-StartPortForwardingSession \
--parameters "localPortNumber=55678,portNumber=3389"