AWS RTB Fabric supports custom domains for real-time bidding workloads

Published
May 14, 2026
https://aws.amazon.com/about-aws/whats-new/2026/05/aws-rtb-fabric-custom-domains/

AWS RTB Fabric Custom Domains Support

AWS RTB Fabric now supports custom domains for real-time bidding transactions, allowing AdTech companies to preserve their public endpoints and use owned domains without requiring partner endpoint updates.

With custom domains, AdTech companies can configure their own DNS and CNAME public endpoints, and define routing rules to direct traffic to specific RTB Fabric links based on URL patterns. This allows seamless routing of partner traffic through RTB Fabric without altering endpoint configurations.

What to do

  • Configure your DNS and CNAME public endpoints.
  • Define routing rules to map URL patterns to specific traffic sources.
  • Seamlessly route partner traffic through RTB Fabric.

RTB Fabric is available in all supported AWS Regions with single-digit millisecond latency and reduced cloud networking costs. For more information, visit the documentation or product page.




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