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Cloud Computing · Advanced

AWS PrivateLink

AWS technology providing private connectivity to services across VPCs and accounts through interface endpoints, without exposing traffic to the internet.

Definition

PrivateLink lets consumers reach AWS services, their own services published as endpoint services behind a Network Load Balancer, and partner SaaS services through elastic network interfaces with private IPs in their subnets. It works with overlapping CIDRs and is unidirectional (consumer to provider).

Example

A SaaS provider exposes its API through an endpoint service so customers connect privately from their VPCs.

Exam tip

PrivateLink is preferred over VPC peering when exposing a single service to many consumers or when CIDRs overlap.

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