Update overview.md

Author: amthomas46

docs/sql-server/azure-arc/overview.md

@@ -25,6 +25,9 @@ The following diagram illustrates the architecture of Azure Arc enable SQL Serve
 
 ![Public preview architecture](media/overview/architecture.png)
 
+To learn more about these capabilities, you can also refer to this Data Exposed episode.
+> [!VIDEO https://channel9.msdn.com/Shows/Data-Exposed/Understanding-Azure-Arc-Enabled-SQL-Server/player?format=ny]
+
 ## Prerequisites
 
 ### Supported SQL versions and operating systems