Worked on the hashicorp/terraform-provider-azurerm repository to extend Azure VM lifecycle management by implementing a new deallocate action for the azurerm_virtual_machine_power resource. This addition allowed users to deallocate virtual machines through Terraform, complementing existing power management actions such as power_on, power_off, and restart. The work involved backend development in Go, API integration, and updates to both provider code and user documentation. By enabling deallocation, the changes improved automation capabilities and cost optimization for Terraform users managing Azure infrastructure, while also enhancing provider maintainability and ensuring feature parity with Azure’s native VM lifecycle controls. No bugs were addressed.