Azure web app with IIS running ASP.NET core/Kestrel

When you deploy your ASP.NET core (.NET 8) to an Azure web app, you’ll have likely created the app to work with Kestrel (so you can deploy to pretty much any environment). But when you deploy as an Azure Web App, you’re essentially deploying to an IIS application.

So we need for IIS to simply proxy across to our Kestrel app. We achieve this by adding a Web.config to the root of our published app. and we’ll have configuration such as below

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath=".\MyAspNetCoreApp.exe" stdoutLogEnabled="false" stdoutLogFile="\\?\%home%\LogFiles\stdout" hostingModel="inprocess" />
    </system.webServer>
  </location>
</configuration>