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title Discover .NET Apps to Azure App Service
description Learn about .NET migration resources available to Azure App Service and about the capabilities of discovery.
author msangapu-msft
ms.topic concept-article
ms.date 11/17/2025
ms.author msangapu
ms.devlang csharp
ms.custom devx-track-dotnet
ms.service azure-app-service

At-scale discovery of .NET web apps

For ASP.NET web apps discovery, you need to either install a new Azure Migrate appliance or upgrade an existing one.

Once the appliance is configured, Azure Migrate initiates the discovery of web apps deployed on Internet Information Services (IIS) web servers hosted within your on-premises VMware environment.

Key capabilities of ASP.NET web app discovery

  • Agentless discovery of up to 20,000 web apps with a single Azure Migrate appliance
  • Rich and interactive dashboard that lists IIS web servers and underlying VM infra details. Web apps discovery surfaces information such as:
    • web app name
    • web server type and version
    • URLs
    • binding port
    • application pool
  • If web apps discovery fails, the discovery dashboard allows easy navigation to review relevant error messages, possible causes of failure, and suggested remediation actions

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