Worked on the hmcts/azure-public-dns repository to deliver SIT environment routing for the application gateway by implementing a DNS A record for 'tmc.sit' in the cjscp-org-uk.yml configuration. Used YAML and Infrastructure as Code practices to ensure the new record resolved to 172.167.175.163, enabling accurate routing to the SIT Application Gateway. This change reduced environment routing risks and supported smoother QA cycles by improving deployment confidence. The update also enhanced traceability and governance, as repository configuration and documentation were updated for future audits. No bugs were reported during this period, reflecting a focused and stable delivery.