ARC Region switch adds Lambda event source mapping execution block for event handling during failover
Region Switch Lambda Esm Execution Block ยท 2026-05-14
Actions
Technical Details
| Regions | all commercial Regions |
|---|---|
| Cost Impact | Neutral |
| IaC Impact | High |
What This Means
For DevOps Teams
Update your failover processes to integrate the new Lambda event source mapping execution block, which automates the toggling of event source mappings to prevent duplicate processing during regional failovers.
For Platform Teams
Adopt the Lambda event source mapping execution block to simplify the architecture of multi-Region event-driven applications, reducing operational toil and improving the reliability of event processing.
For Executives
Evaluate the new Lambda event source mapping execution block to automate failover processes, reducing manual intervention and potential errors, thereby enhancing operational efficiency and reliability of multi-Region applications.
Source
Related Region Switch Lambda Esm Execution Block Updates
- AWS Lambda supports scheduled scaling for functions on Lambda Managed Instances (2026-05-12)
- AWS SAM CLI adds BuildKit support for AWS Lambda functions packaged as container images (2026-05-05)
- AWS Lambda adds support for Ruby 4.0 (2026-04-30)
- AWS Lambda Provisioned Mode for Kafka event source mappings (ESMs) now available in AWS Asia Pacific (Taipei) and AWS GovCloud (US) Regions (2026-04-24)
- AWS Lambda durable functions are now available in 16 additional AWS Regions (2026-04-22)