Support Distributed Availability Groups with Distributed Network Names
Instead of needing an ILB for AGs and FCIs, IaaS-based SQL Server deployments in Azure now support the use of a Distributed Network Name (DNN) for FCIs or an AG's listener. This makes deployment a little easier.
However, if you have Enterprise Edition, are using FCIs or AG listeners with DNNs instead of traditional network name resources, you cannot currently deploy a distributed AG. That requires an ILB.
Microsoft should build the right plumbing into DNNs to support distributed AGs as it is an important disaster recovery and migration feature.