Microsoft Azure File Sync
Microsoft Azure File Sync keeps your Azure file share (cloud based) in-sync with your on-premises Window Servers. Azure File Sync can tier files between your on-premises file server and Azure Files. This enables you to keep only the newest and most recently accessed files locally without sacrificing the ability to see and access your entire file store through seamless cloud recall. With Azure File Sync, you can effectively transform your Windows File Server into an on-premises tier of Azure Files.