There are two different ways to deploy templates to Azure DevOps Services. Both methods provide the same results, so choosethe one that best fits your workflow.
1. Add a single step to your build pipeline that runs the PowerShell script that's included in the Azure Resource Group deployment project (Deploy-AzureResourceGroup.ps1). The script copies artifacts and then deploysthe template.
2. Add multiple Azure DevOps Services build steps, each one performing a stage task.
The first option has the advantage of using the same script used by developers in Visual Studio and providing consistency throughout the lifecycle.
s:
https://docs.microsoft.com/en-us/azure/vs-azure-tools-resource-groups-ci-in-vsts