James Chapman developed the Plan Core Infrastructure Preview feature for the microsoft/AzureTRE repository, focusing on safer and more transparent infrastructure deployments. He introduced a plan-core command within the Makefile, enabling teams to generate a Terraform plan for core infrastructure prior to deployment. This approach leveraged Shell scripting and Infrastructure as Code principles to automate plan generation, providing early visibility into proposed changes and supporting risk mitigation. James also updated documentation to clarify usage, ensuring reproducibility and clear governance. While the work was limited to a single feature over one month, it demonstrated depth in DevOps practices and infrastructure automation workflows.