add bullet for patching

Author: cephalin

articles/app-service/overview.md

@@ -4,7 +4,7 @@ description: Learn how Azure App Service helps you develop and host web applicat
 
 ms.assetid: 94af2caf-a2ec-4415-a097-f60694b860b3
 ms.topic: overview
-ms.date: 01/04/2017
+ms.date: 04/30/2020
 ms.custom: mvc, seodec18
 ---
 
@@ -21,6 +21,7 @@ With App Service, you pay for the Azure compute resources you use. The compute r
 Here are some key features of App Service:
 
 * **Multiple languages and frameworks** - App Service has first-class support for ASP.NET, ASP.NET Core, Java, Ruby, Node.js, PHP, or Python. You can also run [PowerShell and other scripts or executables](webjobs-create.md) as background services.
+* **Managed production environment** - App Service automatically [patches and maintains the OS and language frameworks](overview-patch-os-runtime.md) for you. Spend time writing great apps and let Azure worry about the platform.
 * **DevOps optimization** - Set up [continuous integration and deployment](deploy-continuous-deployment.md) with Azure DevOps, GitHub, BitBucket, Docker Hub, or Azure Container Registry. Promote updates through [test and staging environments](deploy-staging-slots.md). Manage your apps in App Service by using [Azure PowerShell](/powershell/azureps-cmdlets-docs) or the [cross-platform command-line interface (CLI)](/cli/azure/install-azure-cli).
 * **Global scale with high availability** - Scale [up](manage-scale-up.md) or [out](../monitoring-and-diagnostics/insights-how-to-scale.md) manually or automatically. Host your apps anywhere in Microsoft's global datacenter infrastructure, and the App Service [SLA](https://azure.microsoft.com/support/legal/sla/app-service/) promises high availability.
 * **Connections to SaaS platforms and on-premises data** - Choose from more than 50 [connectors](../connectors/apis-list.md) for enterprise systems (such as SAP), SaaS services (such as Salesforce), and internet services (such as Facebook). Access on-premises data using [Hybrid Connections](app-service-hybrid-connections.md) and [Azure Virtual Networks](web-sites-integrate-with-vnet.md).