AWS Transit Gateway and Cloud WAN Introduce Managed 1:1 NAT for Overlapping Networks

New 1:1 NAT support on AWS Transit Gateway and Cloud WAN attachments resolves IP address overlap challenges.

By Lucas Hayes · Editorial pseudonym · 2026-10-23 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-10-23. Source published: 2026-10-23. 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.

AWS announced managed one-to-one network address translation (NAT) on Transit Gateway and Cloud WAN attachments via Regional Private NAT Gateway integration. This capability allows private networks with overlapping IP ranges to connect without renumbering, NAT appliances, or complex return-traffic rules.

Typical use cases include mergers, partnerships, multicloud scenarios, and independently provisioned VPCs requiring interconnection. The managed NAT applies translation bi-directionally across multiple connectivity options, is configured easily via AWS interfaces, and includes CloudWatch metrics for monitoring. Availability covers all AWS commercial regions supporting these services.

Source & further reading

AWS Transit Gateway and AWS Cloud WAN now support 1:1 NAT ↗

Source published 2026-10-23. 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.