September 2025 summary for govuk-one-login/ipv-core-back: Key telemetry and stability improvements that unlock faster insights and reduce operational risk. OpenTelemetry batch processing across Lambdas introduced (traces/metrics pipelines; commit cca8f8f21bc6ee3701b8e87a98740f75625b4f4c). Removed collector.yaml from validate-appconfig lambda to avoid misconfiguration (commit cb7950237ca68ef7a0ac7b1a64ecb14379124a8b). Reverted to URLConnection HTTP client across modules for stability (commit 575af631d640ac1123bdb21fa98f97a159ef3970).

August 2025 — ipv-core-back: Delivered OpenTelemetry integration across all environments, enabling distributed tracing and unified observability. This included updating the deployment template and dependencies, and wiring Lambda layers and environment variables to enable tracing consistently from development through production. The change is recorded under PYIC-8457 with commit 5d43aed37866f10e3769229ee593a1a1cb263eec. Business impact: improved monitoring, faster MTTR, and better visibility for capacity planning and reliability.

July 2025 — ipv-core-back: OpenTelemetry Observability Modernization Across Build and Deployment, telemetry config centralization, and cleanup of legacy Dynatrace integration. This work established a standardized, secure observability stack across the build and deployment environments, enabling faster troubleshooting and more reliable deployments.

June 2025: ipv-core-front monitoring cleanup to reduce noise by removing non-actionable CloudWatch alarm (LambdaInvocationsOutOfSync) from the deploy/template.yaml. This effort improves monitoring signal quality, reduces alert fatigue, and enhances maintainability of the deployment templates.