add networking services

Author: vhorne

articles/networking/security/index.yml

@@ -173,4 +173,14 @@ additionalContent:
             - text: Build the first layer of defense with Azure Security services
               url: /azure/architecture/solution-ideas/articles/azure-security-build-first-layer-defense
             - text: Secure and govern workloads with network-level segmentation
-              url: /azure/architecture/reference-architectures/hybrid-networking/network-level-segmentation
+              url: /azure/architecture/reference-architectures/hybrid-networking/network-level-segmentation
+        - title: Networking services
+          links:
+           - text: Load balancing and Content Delivery
+             url: /azure/networking/load-balancer-content-delivery/
+           - text: Network Foundations
+             url: /azure/networking/foundations/
+           - text: Hybrid connectivity
+             url: /azure/networking/hybrid-connectivity/
+           - text: Network monitoring and management
+             url: /azure/networking/monitoring-management/