Developed hibernation capability for Azure DevTest Labs virtual machines within the Azure CLI, enabling users to pause VMs to optimize cost and manage resource lifecycles more efficiently. The work involved implementing a new lab vm hibernate command in the Azure/azure-cli repository, integrating necessary API calls and ensuring seamless CLI registration. Leveraging expertise in Python, Azure CLI, and cloud computing, the developer focused on robust API integration and command workflow alignment. This feature addressed a practical need for DevOps teams to control VM states directly from the CLI, enhancing operational flexibility without introducing new bugs or regressions during the release period.