Amazon DynamoDB now supports AWS PrivateLink. With AWS PrivateLink, you can simplify private network connectivity between virtual private clouds (VPCs), DynamoDB, and your on-premises data centers using interface VPC endpoints and private IP addresses. AWS PrivateLink is compatible with AWS Direct Connect and AWS Virtual Private Network (VPN) to facilitate private network connectivity, and helps you eliminate the need to use public IP addresses, configure firewall rules, or configure an internet gateway to access DynamoDB from your on-premises data centers. As a result, AWS PrivateLink helps you maintain compliance for your DynamoDB workloads over the private network.
Source:: Amazon AWS