initial commits - hybrid pillar

Author: mbender-ms

articles/expressroute/expressroute-introduction.md

@@ -19,7 +19,8 @@ Connectivity can be from an any-to-any (IP VPN) network, a point-to-point Ethern
 
 > [!NOTE]
 > In the context of ExpressRoute, the Microsoft Edge describes the edge routers on the Microsoft side of the ExpressRoute circuit. This is the ExpressRoute circuit's point of entry into Microsoft's network.
-> 
+>
+> Azure ExpressRoute is one of the services that make up the Hybrid Connectivity cagegory in Azure. Other services in this category include [VPN Gateway](../vpn-gateway/vpn-gateway-about-vpngateways.md) and [Virtual WAN](../virtual-wan/virtual-wan-about.md). Each service has its own unique features and use cases. For more information on this service category, see [Hybrid Connectivity](../networking/hybrid-connectivity/hybrid-connectivity.md).
 
 ## Key benefits