Biswajit Chakraborty developed and deployed a DNS configuration feature for the hmcts/azure-public-dns repository, focusing on enabling correct routing for the SIT environment’s application gateway. He implemented an A record for 'tmc.sit' in the cjscp-org-uk.yml file, mapping it to the required IP address to support seamless SIT environment access. Using YAML and applying infrastructure as code principles, Biswajit’s work improved routing reliability and reduced environment-related risks during QA cycles. The change enhanced traceability and governance for future audits, demonstrating a focused application of DNS configuration skills within a targeted, single-feature scope over the course of the month.