May 2025 monthly summary for govuk-one-login/performance-testing. Delivered centralized deployment configuration for DNS/SSL and cross-stack integration, stabilized deployment templates, and migrated cross-stack references from SSM to ImportValue to support modular deployments. These changes improve redeployability, configuration accuracy, and environment parity across build and staging.

April 2025: Implemented CloudFormation-based DNS and TLS setup for multiple environments (performance testing, staging, production). Established Route 53 hosted zones, ACM certificates, and API Gateway domain names via IaC; environment-specific DNS suffixes now supported. Commits: 77faac779bc104009dd93498c52616ff444bc978; 2fe2c500b00eaba31ce73e0ff0be52052fbde477.

March 2025: Focused security remediation and dependency hygiene in the performance-testing project to strengthen security posture and maintainability. Delivered targeted fixes and updated packages to current secure versions, reducing risk and ensuring healthier test infrastructure.

January 2025: Delivered a performance optimization for ipv-cri-address-front by increasing Fargate resources to boost main event loop throughput and latency. The change is implemented via commit f8eb899fdd3d2d4b521c6896b433739cc9b7770f, raising vCPU to 2 and increasing memory to support higher load, with validation in CI/staging and readiness for production rollout.

October 2024 — Delivered Docker Image Guidance and Immutability Documentation Update for alphagov/gds-way. Implemented updates to Dockerfile guidance (Ruby version pinning, image reference best practices), clarified using digests for immutability, and added a Dependabot limitation warning. Commit: 83ff17b06913c29037399b093db75639693169c5. No major bugs fixed this month; focus on documentation quality, deployment safety, and developer onboarding.