You can already extend your on-premises file servers into Azure using Azure File Sync, but now you can completely decommission those old on-premises file servers and replace them with serverless Azure file shares. This video gives you a quick look at how to domain join your storage account to your on-premises domain, and configure Azure networking to access your Azure file share from on-premises.
https://techcommunity.microsoft.com/t5/video-hub/azure-unblogged-replace-your-file-server-with-a-serverless-azure/m-p/1972871#M837 https://techcommunity.microsoft.com/t5/video-hub/azure-unblogged-replace-your-file-server-with-a-serverless-azure/m-p/1972871#M837 2020-12-09 19:01:24Z