Ethan Mills focused on governance and observability improvements across two GOV.UK One Login services. For the account-interventions-service repository, he established a CODEOWNERS file to formalize code ownership, streamlining the pull request review process and clarifying responsibilities for @govuk-one-login/one-login-home-dev. In the authentication-api repository, Ethan re-integrated OpenTelemetry observability by updating Gradle build configurations and template.yaml files, ensuring consistent tracing and improved incident detection. His work leveraged Gradle, YAML, and DevOps practices to enhance deployment reliability and onboarding efficiency. While no bugs were fixed, Ethan’s contributions provided a solid foundation for quality control and operational visibility in both services.