add architecture card

Author: duongau

articles/frontdoor/index.yml

@@ -38,6 +38,20 @@ landingContent:
           - text: Create a Front Door
             url: create-front-door-portal.md
 
+  # Card
+  - title: Learn about Front Door and CDN architecture
+    linkLists:
+      - linkListType: architecture
+        links:
+          - text: Expose Azure Spring Apps through a reverse proxy
+            url: /azure/architecture/reference-architectures/microservices/spring-cloud-reverse-proxy
+          - text: CDN guidance
+            url: /azure/architecture/best-practices/cdn
+          - text: Scalable and secure WordPress on Azure
+            url: /azure/architecture/example-scenario/infrastructure/wordpress
+          - text: Content Delivery Network analytics
+            url: /azure/architecture/solution-ideas/articles/content-delivery-network-azure-data-explorer
+
   # Card
   - title: Configure Endpoint Manager
     linkLists: