AWS SAM CLI adds AWS CloudFormation Language Extensions support to accelerate local serverless development
News
This article announces AWS SAM CLI support for AWS CloudFormation Language Extensions, enabling developers to reduce infrastructure-as-code template duplication while maintaining local development workflows.
- SAM CLI now processes CloudFormation Language Extensions for local development
- Developers can define resources once and test locally without cloud deployments
- Supports Fn::ForEach to generate multiple resources from single definitions
- Works with sam build, sam local invoke, sam sync, sam local start-api, and sam validate
- Also supports Fn::Length, Fn::ToJsonString, Fn::FindInMap with DefaultValue
- Catch errors locally before deploying to reduce debugging time
SAM CLI now enables faster serverless development by combining template deduplication with local testing capabilities.
The AWS News Feed is currently looking for gold sponsors. If you want to support the AWS community and reach a large audience of AWS professionals, consider sponsoring the AWS News Feed.
Related articles
Oct 15
2025
2025
AWS SAM CLI adds Finch support, expanding local development tool options for serverless applications
May 5
2026
2026
AWS SAM CLI adds BuildKit support for AWS Lambda functions packaged as container images
Nov 15
2022
2022
AWS SAM CLI introduces Terraform support for AWS Lambda local testing and debugging
Sep 11
2025
2025
AWS launches LocalStack integration in VS Code IDE to simplify local testing for serverless applications
The AWS News Feed is currently looking for silver sponsors. If you want to support the AWS community and reach a large audience of AWS professionals, consider sponsoring the AWS News Feed.