The Register-AzureRmAutomationDscNode cmdlet registers an Azure virtual machine as an APS Desired State Configuration (DSC) node in an Azure Automation account.
Scenario: The Azure DevOps organization includes:
The Docker extension -
A deployment pool named Pool7 that contains 10 Azure virtual machines that run Windows Server 2019

Reference:
https://docs.microsoft.com/en-us/powershell/module/azurerm.automation/register-azurermautomationdscnode