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Cloud Computing · Intermediate

VPC Endpoint

AWS construct for privately connecting a VPC to supported services without an internet gateway, NAT or public IPs.

Definition

Gateway endpoints, available for Amazon S3 and DynamoDB, are free and work by adding routes to route tables. Interface endpoints, powered by PrivateLink, create ENIs with private IPs for many AWS and partner services and are charged hourly and per GB. Endpoint policies can restrict which resources are reachable.

Example

A gateway endpoint for S3 lets private instances reach buckets without NAT gateway data processing charges.

Exam tip

Use a gateway endpoint for S3/DynamoDB to cut NAT costs; interface endpoints are needed for on-premises access over VPN or Direct Connect.

Related terms