You can now use AWS PrivateLink to privately access Amazon MemoryDB for Redis from your Amazon Virtual Private Cloud (Amazon VPC). AWS PrivateLink provides private connectivity between VPCs, AWS services, and on-premises networks, without exposing traffic to the public internet and securing your network traffic. The Amazon MemoryDB for Redis API supports AWS PrivateLink in all regions where Amazon MemoryDB for Redis is available. For a complete list, see supported regions.
Source:: Amazon AWS