AWS CloudFormation Introduces Cross-Account and Cross-Region Stack Output References

CloudFormation added the Fn::GetStackOutput function allowing templates and CDK apps to reference stack outputs across AWS accounts and regions, simplifying multi-account workload provisioning.

By Eva Hart · Editorial pseudonym · 2026-05-19 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-05-19. 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.

Prior methods required manual copying and coordination to share infrastructure values like VPC IDs between accounts. The new intrinsic function lets CloudFormation assume specified IAM roles to fetch outputs directly during template processing, reducing deployment complexity and configuration drift risks.

In CDK applications, this replaces custom workarounds like SSM parameters or custom resources, enabling automated, weak stack references and simplifying stack refactoring. The function is supported in all regions where CloudFormation operates, enhancing infrastructure as code workflows for distributed AWS environments.

Source & further reading

Reference stack outputs across accounts and Regions with AWS CloudFormation and CDK ↗

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.