Always on Availability Groups Using Load Balancer(VNN) and Distributed Network Name(DNN)
This Video helps you to understand the differences when configuring windows cluster on 2016 and 2019. Also it helps us the DBA to understand on how to configure VNN & DNN both together in Azure.
This also covers the various scenarios in single subnet Environment. It explains Clearly why we need Load Balancer for SQL Server Always on Listener in Azure.