Your organization is in the process of optimizing its Azure network architecture and wants to dynamically manage and exchange routing information…

Azure Route Server is a fully managed service specifically designed to simplify dynamic routing

between Network Virtual Appliances (NVAs) and the Azure virtual network. It functions as a

centralized Border Gateway Protocol (BGP) peering point. NVAs (such as firewalls or SD-WAN

appliances) can establish a BGP session with the Route Server to dynamically exchange and

advertise routes to the Azure Software Defined Network (SDN). This eliminates the need for

complex, manually configured User Defined Routes (UDRs), providing a centralized and efficient

mechanism for route management as described in the question.

A. Azure Virtual WAN: This is a large-scale, unified framework for branch connectivity and

network aggregation. While it includes routing capabilities, it is a much broader solution, not the

specific service for centralizing BGP exchange.

B. Azure VPN Gateway: Its primary function is to provide secure site-to-site or point-to-site

connectivity. It can use BGP, but it acts as a connectivity endpoint, not a central route exchange

hub for NVAs.

C. Azure ExpressRoute: This service provides private, dedicated connectivity to the Microsoft

cloud. It uses BGP for routing over its private circuits but is fundamentally a connectivity service,

not a centralized route management point.

1. Microsoft Azure Documentation, "What is Azure Route Server?": "Azure Route Server

simplifies dynamic routing between your Network Virtual Appliance (NVA) and your virtual

network. It allows you to exchange routing information directly through Border Gateway Protocol

(BGP) routing protocol... without the need to manually configure or maintain route tables."

URL: https://learn.microsoft.com/en-us/azure/route-server/overview

2. Microsoft Azure Documentation, "Azure Route Server FAQ": "Azure Route Server is a service

that's intended to simplify the routing for NVAs in your VNet... It offers a central point where NVAs

can peer BGP with."

URL: https://learn.microsoft.com/en-us/azure/route-server/route-server-faq

3. Microsoft Azure Documentation, "About BGP with Azure VPN Gateway": This document

describes how BGP is used specifically for VPN gateways to propagate routes from on-premises

sites to virtual networks, highlighting its role as part of a connectivity solution rather than a central

exchange hub.

URL: https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-bgp-overview