Posted On: Apr 7, 2022

Beginning April 1, 2022, the inter-Availability Zone (AZ) data transfer within the same AWS Region for AWS PrivateLink, AWS Transit Gateway, and AWS Client VPN is free of charge. Previously, customers incurred an inter-AZ data transfer charge for sending data across availability zones while using these networking services. With this pricing change, inter-AZ data transfer for these services is free of charge, making it even more cost-effective for customers to run multi-AZ workloads.  

Customers do not need to make any changes to their existing VPC Interface Endpoints/Client VPN Endpoints/Transit Gateway Elastic Network Interfaces to benefit from this price reduction as these changes will be automatically applied to their AWS bills. Customers can also view their free data transfer usage (for these networking services) in Cost Explorer or Cost & Usage Report. This usage is captured under the “Region_Name-DataTransfer-xAZ-In/Out-Bytes” Usage Type.  

Below are additional details on how this pricing change impacts each of the affected networking services:  

AWS PrivateLink: All inter-Availability Zone (AZ) data transfer charges associated with accessing services via a VPC Interface Endpoint (powered by AWS PrivateLink) are now free of charge. These changes apply only to VPC Interface Endpoints and not Gateway Load Balancer Endpoints. There are no changes to the data processing charges for VPC Interface Endpoints and these will continue to be charged at the standard data processing rates.  

AWS Transit Gateway: All data transfer charges across Availability Zones (AZs) over private IP address within the same AWS Region via Transit Gateway are now free of charge. There are no changes to the inter-region data transfer or Transit Gateway data processing charges and they will continue to be charged at the standard inter-region data transfer and data processing rates respectively.

AWS Client VPN: All inter-Availability Zone (AZ) data transfer charges associated with accessing Client VPN Endpoints over private IP address within the same AWS Region are now free of charge.  

These price reductions will apply to all AWS commercial and AWS Gov Cloud (US) Regions. For more pricing details on these services, please visit the Amazon VPC pricing page.