What is a VPC peering connection?

What is a VPC peering connection?

• A. A private network link between two VPCs; use for secure communication without public internet.
• B. A gateway for VPN connection to on-prem.
• C. A public WAN link to Internet gateways.
• D. A load balancer connecting VPCs.

Answer: (B)

A VPC peering connection is a private network link between two VPCs that lets resources in those VPCs communicate with each other using private IP addresses over the AWS backbone, without traversing the public internet. This arrangement provides secure, low-latency routing between VPCs you own or control, and it stays entirely within AWS networking, subject to route tables and security controls. This isn’t about connecting to on-premises networks (that would be a VPN gateway scenario), it isn’t a public WAN link to Internet gateways, and it isn’t a load balancer that distributes traffic between VPCs. Those other concepts serve different purposes: VPN gateways bridge to on-prem networks, public WAN paths use the Internet, and load balancers manage traffic to resources rather than create direct inter-VPC routing.

A VPC peering connection is a private network link between two VPCs that lets resources in those VPCs communicate with each other using private IP addresses over the AWS backbone, without traversing the public internet. This arrangement provides secure, low-latency routing between VPCs you own or control, and it stays entirely within AWS networking, subject to route tables and security controls.

This isn’t about connecting to on-premises networks (that would be a VPN gateway scenario), it isn’t a public WAN link to Internet gateways, and it isn’t a load balancer that distributes traffic between VPCs. Those other concepts serve different purposes: VPN gateways bridge to on-prem networks, public WAN paths use the Internet, and load balancers manage traffic to resources rather than create direct inter-VPC routing.