Update app-routing.md

SEO optimizations

Author: sabbour

articles/aks/app-routing.md

@@ -1,5 +1,5 @@
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-title: Azure Kubernetes Service (AKS) ingress with the application routing add-on (preview)
+title: Azure Kubernetes Service (AKS) managed nginx ingress with the application routing add-on (preview)
 description: Use the application routing add-on to securely access applications deployed on Azure Kubernetes Service (AKS).
 ms.subservice: aks-networking
 ms.custom: devx-track-azurecli
@@ -9,13 +9,13 @@ ms.date: 08/07/2023
 ms.author: allensu
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-# Azure Kubernetes Service (AKS) ingress with the application routing add-on (preview)
+# Managed nginx ingress with the application routing add-on (preview)
 
-The application routing add-on configures an [ingress controller](https://kubernetes.io/docs/concepts/services-networking/ingress-controllers/) in your Azure Kubernetes Service (AKS) cluster with SSL termination through certificates stored in Azure Key Vault. It can optionally integrate with Open Service Mesh (OSM) for end-to-end encryption of inter-cluster communication using mutual TLS (mTLS). When you deploy ingresses, the add-on creates publicly accessible DNS names for endpoints on an Azure DNS zone.
+The application routing add-on configures an [ingress controller](https://kubernetes.io/docs/concepts/services-networking/ingress-controllers/) in your Azure Kubernetes Service (AKS) cluster with SSL termination through certificates stored in Azure Key Vault. When you deploy ingresses, the add-on creates publicly accessible DNS names for endpoints on an Azure DNS zone.
 
 [!INCLUDE [preview features callout](./includes/preview/preview-callout.md)]
 
-## Application routing add-on overview
+## Application routing add-on with nginx overview
 
 The application routing add-on deploys the following components: