AWS RTB Fabric Enables Custom Domain Use for Real-Time Bidding Endpoint Continuity

AWS RTB Fabric introduced support for custom domains, letting advertising platforms maintain their public endpoints while routing through AWS infrastructure.

By Julian Wells · Editorial pseudonym · 2026-05-25 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-05-25. Source published: 2026-05-14. Added to this archive: 2026-11-03. This briefing was prepared later from the linked announcement; it was not published on this website on the historical edition date.

With custom domain support, AWS RTB Fabric allows AdTech firms to keep established bid endpoint URLs intact while routing real-time bidding traffic through the RTB Fabric platform. This avoids the need for extensive coordination among partners to update endpoint URLs, preserving operational continuity.

Users can map URL patterns via CNAME DNS configuration to RTB Fabric links, supporting seamless traffic routing without modifying partner endpoint settings. The service promises low latency through a private network and significant cost reductions compared to standard cloud networking, facilitating scalable, efficient real-time bidding workflows.

Source & further reading

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

Source published 2026-05-14. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.