Amazon EC2 Instance Connect supports SSH and RDP connectivity without public IP address

With EC2 Instance Connect Endpoint (EIC Endpoint), customers now have SSH and RDP connectivity to their EC2 instances without using public IP addresses. In past, customers assigned public IPs to their EC2 instances for remote connectivity. With EIC Endpoints, customers can have remote connectivity to their instances in private subnets, eliminating the need to use public IPv4 addresses for connectivity.

Source:: Amazon AWS