What is Azure Virtual WAN?
Azure Virtual WAN is a networking service that provides optimized and automated branch-to-branch connectivity through Azure. Virtual WAN lets you connect and configure branch devices to communicate with Azure. This can be done either manually, or by using preferred partner devices through a Virtual WAN partner. See the Preferred partners article for details. Using preferred partner devices allows you ease of use, simplification of connectivity, and configuration management. The Azure WAN built-in dashboard provides instant troubleshooting insights that can help save you time, and gives you an easy way to view large-scale connectivity.
Read the article over at Microsoft here.