ASP.NET Core Hosting Bundle is required if you want the IIS process manager to automatically launch the client app and the Web APIs deployed to the IIS website. You will need to install this component, no matter which method ("Web Deploy" or "Folder") you will use to deploy the Web APIs.
Download and install ASP.NET Core Hosting Bundle 3.1 from https://dotnet.microsoft.com/download/dotnet/thank-you/runtime-aspnetcore-3.1.13-windows-hosting-bundle-installer.
