Abhivan Chekuri developed and enhanced sandbox testing infrastructure for labs-abhivan-nodejs, focusing on DNS and deployment environments to streamline golden-path validation. Working across the hmcts/azure-public-dns, hmcts/azure-private-dns, and hmcts/azure-platform-terraform repositories, Abhivan used Terraform, YAML, and HCL to automate DNS record creation and deployment configuration, including domain and certificate management. In hmcts/cnp-azuredevops-libraries, he improved deprecation tracking by implementing per-repository rules and exceptions, increasing governance accuracy. The work emphasized infrastructure as code and DevOps practices, delivering end-to-end readiness for sandbox validation and enabling faster feedback cycles, with a clear focus on testability and process improvement over bug fixing.