Public Preview: Route Maps for Azure Route Server
If you've ever wished you could influence how routes flow through Azure Route Server — filter unwanted prefixes, prepend AS-PATH to shift traffic to a backup link, or summarise a hundred on-prem routes into a single tidy aggregate — Route Maps is the feature you've been waiting for. It entered public preview on 31 July 2026.
Route Maps gives you per-connection, per-direction control over BGP route advertisements on Azure Route Server. You can match routes by prefix, AS-PATH, or BGP community, then drop them, modify their attributes, or aggregate them. It applies to BGP peerings with network virtual appliances (NVAs), ExpressRoute gateway connections, and VPN gateway connections in the same virtual network.
Think of it like a routing policy engine sitting inside your Route Server. Every route that enters or leaves gets checked against your rules, and you decide what comes through and in what shape.