June 2026 monthly summary for aws/serverless-java-container focusing on delivering robust ALB header handling and aligning CI/build tooling with Spring Boot 4+.

May 2026: aws/aws-sam-cli delivered the SAM CLI release 1.160.0. No major bugs fixed this period. Release work focused on version bump discipline and preparing the release for downstream tooling and customer deployments. Commit 9c2aecc7fa75338ce88edf4830fa0ebc44a09626 ("chore: bump version to 1.160.0 (#8994)") updated the repository to the new version in alignment with semantic versioning.

March 2026 monthly summary for aws/aws-sam-cli: Focused on delivering and stabilizing the Release 1.155.x series with targeted error logging enhancements and comprehensive code cleanup across 1.155.0, 1.155.1, and 1.155.2. The work improved stability, observability, and maintainability, enabling faster diagnostics and reduced noise in production logs. Release history is now cleaner with explicit version bumps supporting reliable deployment and rollback.

February 2026 monthly summary for aws/serverless-java-container focusing on delivering reliable, scalable serverless HTTP handling and modernizing the build/release process. Key outcomes include implementation of Spring Boot 4 HTTP request handling improvements via a new ServerlessHttpServletRequest to better manage query parameters, headers, and request context for serverless deployments, accompanied by documentation updates and input validation fixes. Strengthened AWS Spring HTTP processing tests to validate HTTP API context attributes, stage variables, null multi-value headers, and base64-encoded bodies, increasing confidence in production request generation. Standardized versioning and modernization of the build system, migrating from Nexus to Maven Central and ensuring consistent versioning across modules for backward compatibility and stable releases. Release stability improvements were implemented by excluding Spring Boot 3 modules from releases to avoid regressions and preserve compatibility. Notable bug fixes include null checks in request generation (generateRequest1) and expanded test coverage to prevent null and edge-case failures.

January 2026 monthly summary for aws/serverless-java-container focusing on business value and technical achievements. Key outcomes include enabling Spring Boot 4/7 compatibility in the AWS Serverless Java Container, stabilizing deployments with a Dockerfile architecture fix and up-to-date Spring Boot 3 dependencies, and documenting the new Spring Boot 3 branch and Jakarta EE 9-10 support to guide adoption and maintenance.

December 2025: Focused on compatibility, packaging, and release readiness across three repositories. Delivered multi-arch readiness and 4.0 compatibility groundwork for aws/serverless-java-container by upgrading Spring Boot to 3.5.x and adding aarch64 Dockerfile support for GraalVM. Completed formal release bumps for SAM CLI (1.151.0) and Serverless Application Model (1.106.0). No explicit major bugs fixed documented; the month emphasized stability, upgrade readiness, and release management to reduce risk and accelerate future shipping. Collaboration and cross-repo coordination improved through consistent versioning and sample verification.

November 2025 monthly summary focusing on observability improvements in the aws/aws-toolkit-common repository. Delivered telemetry definitions for debugging and container management in SAM applications to enhance diagnostics, performance monitoring, and troubleshooting across local and containerized workflows. This work lays the groundwork for end-to-end telemetry coverage and faster MTTR for SAM-related issues.

September 2025 monthly summary focusing on business value and technical achievements across the aws/aws-sam-cli repo. The primary focus was stabilizing test infrastructure for LambdaSharedTestEvent listing by changing how missing remote test-event lists are handled; ResourceNotFound is now logged as informational instead of raising exceptions. This reduces test flakiness and improves reliability of test-event listing. Unit tests were updated to reflect the new behavior, and the change was implemented with minimal surface area to minimize risk.