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As of SQL Server 2019 CU8, we now support the use of Availability Group Listeners based on Dynamic Network Names (DNN Listeners).
DNN listeners are especially useful in Azure VM environments, as they eliminate the need to configure Azure Load Balancers, thus simplifying the configuration and setup.
DNN resources were introduced to Windows Failover Clusters in Windows Server 2016, and have been available for use with SQL FCIs previously.
Dynamic Network Names are a feature which has been supported in Windows Failover Clusters
To learn more, start with the Availability Group overview topic in the documentation, in a new section about DNN listeners: Availability Group Overview – DNN Listener
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