Amazon MemoryDB Gets Private Access in GovCloud with AWS PrivateLink
Amazon MemoryDB now supports AWS PrivateLink in AWS GovCloud (US-West) and AWS GovCloud (US-East), letting you securely access your database from your VPC without hitting the public internet. You can set up interface VPC endpoints through the console, SDK, or CLI, and connect from other VPCs or on-premises networks using VPC Peering, AWS VPN, or AWS Direct Connect.
source: [aws/whats-new]