Posted On: May 13, 2021
Starting May 1st 2021, all data transfer over a VPC Peering connection that stays within an Availability Zone (AZ) is now free. All data transfer over a VPC Peering connection that crosses Availability Zones will continue to be charged at the standard in-region data transfer rates. You can use the Availability Zone-ID to uniquely and consistently identify an Availability Zone across different Amazon Web Services accounts.
Customers use VPC Peering to inter-connect VPCs within a region. VPC Peering is commonly used when interconnecting a small number of VPCs in a region to achieve full mesh connectivity. Amazon Transit Gateway and Amazon PrivateLink are the recommended mechanisms to inter-connect hundreds or thousands of VPCs at scale.
This new feature is generally available in all regions, including the Amazon Web Services China (Beijing) Region, operated by Sinnet and Amazon Web Services China (Ningxia) Region, operated by NWCD.