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AWS Lambda durable functions are now available in 14 additional AWS Regions

Published
December 18, 2025
https://aws.amazon.com/about-aws/whats-new/2025/12/lambda-durable-functions-14-additional-regions/

AWS Lambda Durable Functions Now Available in 14 Additional Regions

AWS Lambda durable functions are now available in 14 additional regions, enabling developers to build reliable multi-step applications and AI workflows. These regions include US East (N. Virginia), US West (Oregon), Europe (Ireland), Europe (Frankfurt), Europe (Milan), Europe (Stockholm), Europe (Spain), Asia Pacific (Sydney), Asia Pacific (Hong Kong), Asia Pacific (Tokyo), Asia Pacific (Singapore), Asia Pacific (Mumbai), Asia Pacific (Malaysia), and Asia Pacific (Thailand).

Durable functions extend the Lambda programming model with new primitives such as "steps" and "waits", allowing for checkpointing progress, automatic recovery from failures, and pausing execution without incurring compute charges for on-demand functions. This expansion helps meet low-latency and data residency requirements while standardizing on a single serverless programming model.

What to do

  • Activate durable functions for new Python (versions 3.13 and 3.14) or Node.js (versions 22 and 24) based Lambda functions using the AWS Lambda API, AWS Management Console, or AWS SDK.
  • Use infrastructure as code tools such as AWS Cloud Formation, AWS Serverless Application Model (AWS SAM), and the AWS Cloud Development Kit (AWS CDK).

Source: AWS release notes




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