May 2026 monthly summary for the aws/serverless-application-model repository. Focused on enhancing WebSocket API flexibility by enabling the StageName property to accept intrinsic functions. Updated the WebSocketApiGenerator and SamWebSocketApi to handle both string and intrinsic types, and added tests to ensure intrinsic StageName values are processed correctly without errors. This work reduces manual configuration, improves automation for multi-stage deployments, and strengthens resilience against config-time regressions.

April 2026: Focused on reliability, maintainability, and performance improvements across the AWS SAM codebase. Delivered targeted bug fixes, modernized Python typing, and significant CI optimizations to shorten feedback loops and reduce resource usage. The work enhances deployment validity, developer productivity, and overall platform stability for customers relying on Serverless Application Model and SAM CLI.

March 2026 monthly summary for aws/aws-sam-cli focused on delivering security-enabled Lambda testing and flexible environment variable handling, with improvements to test reliability and CI reproducibility.

February 2026 monthly summary focusing on key accomplishments across aws/aws-sam-cli, aws-toolkit-vscode, and aws/serverless-application-model. Delivered features and bug fixes that drive release readiness, security, and multi-tenant capabilities, with measurable business value and cross-repo collaboration.

January 2026 monthly summary for aws-toolkit-vscode focusing on reliability of local Lambda testing and alignment with LMI/DAR compatibility. Delivered two high-impact changes: (1) Multi-tenant Local Invoke support by adding a conditional Tenant ID field to the Local Invoke configuration. The field appears when the SAM template contains TenancyConfig and its value is saved in launch.json to be passed to SAM CLI during local invocations, enabling correct behavior for multi-tenant Lambda functions. (2) Lambda SDK compatibility upgrade to 3.953.0 to align with newer LMI/DAR fields. Implemented runtime-safe type handling via type assertions in lambdaClient.ts to bypass TypeScript compile-time mismatches without altering runtime behavior. No tests were added since behavior remains unchanged. This work reduces local testing friction for multi-tenant deployments and ensures future compatibility with LMI/DAR changes.

Month: 2025-12. Focused on reliability and maintainability for the aws/aws-sam-cli project, delivering a targeted refactor and enhanced test coverage for API Gateway TenantIdValidationError. The changes standardize error handling across the API Gateway service, reducing ambiguity in error paths and lowering the risk of regressions for tenants and downstream integrations. The work strengthens production stability and accelerates future feature work by clarifying failure modes and improving test safety nets.

Month: 2025-11. Summary of work delivered for AWS SAM CLI including multi-tenant capabilities, authentication improvements, and release readiness. Key outcomes include delivering multi-tenant invocation support with tenant IDs, validation, CLI parameterization, error handling, and integration into the core invocation flow; updating authentication to use boto3[crt] for improved AWS login security and cross‑platform reproducibility; and shipping a formal release (1.147.0) to mark these improvements and related fixes.