You can extend on-premises deployments of Windows Server to the cloud by using Azure hybrid services. These cloud services provide an array of useful functions, both for extending on-premises into Azure, and for centrally managing from Azure. By using Windows Admin Center in Azure you bridge the on-premises and the cloud worlds.

Using Azure hybrid services within Windows Admin Center, you can:
- Protect virtual machines and use cloud-based backup and disaster recovery (HA/DR).
- Extend on-premises capacity with storage and compute in Azure, and simplify network connectivity to Azure.
- Centralize monitoring, governance, configuration, and security across your applications, network, and infrastructure with the help of cloud-intelligent Azure management services.
While you can set up most Azure hybrid services by downloading an app and doing some manual configuration, many are integrated directly into Windows Admin Center to provide a simplified setup experience and a server-centric view of the services. Windows Admin Center also provides convenient intelligent hyperlinks to the Azure portal to see connected Azure resources as well as a centralized view of your hybrid environment.
You can now use Windows Admin Center (preview) in the Azure portal to manage the Windows Server operating system inside an Azure VM. Manage operating system functions from the Azure portal as well as work with files in the VM without using Remote Desktop or PowerShell.

Sources
https://docs.microsoft.com/en-us/windows-server/manage/windows-admin-center/azure/
https://docs.microsoft.com/en-us/windows-server/manage/windows-admin-center/azure/manage-vm