Merge pull request #89461 from btardif/master

Docs for undelete app

Author: garycentric

articles/app-service/app-service-undelete.md

@@ -0,0 +1,49 @@
+---
+title: Restore deleted App Service apps - Azure App Service
+description: Learn how to restore a deleted App Service app using PowerShell.
+author: btardif
+ms.author: byvinyal
+ms.date: 9/23/2019
+ms.topic: article
+ms.service: app-service
+---
+
+# Restore deleted App Service app Using PowerShell
+
+If you happened to accidentally delete your app in Azure App Service, you can restore it using the commands from the [Az PowerShell module](https://docs.microsoft.com/powershell/azure/?view=azps-2.6.0&viewFallbackFrom=azps-2.2.0).
+
+## List Deleted Web Apps
+
+To get the collection of deleted apps, you can use `Get-AzDeletedWebApp`.
+
+For details on a specific deleted app you can use:
+
+```powershell
+Get-AzDeletedWebApp -Name <your_deleted_app>
+```
+
+The detailed information includes:
+
+- **DeletedSiteId**: Unique identifier for the app, used for scenarios where multiple apps with the same name have been deleted
+- **SubscriptionID**: Subscription containing the deleted resource
+- **Location**: Location of the original app
+- **ResourceGroupName**: Name of the original resource group
+- **Name**: Name of the original app.
+- **Slot**: the name of the slot.
+- **Deletion Time**: When was the app deleted  
+
+## Restore deleted app
+
+Once the app you want to restore has been identified, you can restore it using `Restore-AzDeletedWebApp`.
+
+```powershell
+Restore-AzDeletedWebApp -ResourceGroupName <my_rg> -Name <my_app> -TargetAppServicePlanName <my_asp>
+```
+
+The inputs for command are:
+
+- **Resource Group**: Target resource group where the app will be restored
+- **Name**: Name for the app, should be globally unique.
+- **TargetAppServicePlanName**: App Service plan linked to the app
+
+By default `Restore-AzDeletedWebApp` will restore both your app configuration as well a content. If you want to only restore content, you use the `-RestoreContentOnly` flag with this commandlet.