ASP.NET Core | Generic Host and Web Host

The host setup the server, request pipeline and responsible for app startup and lifetime management. There are two hosts:
  • .NET Generic Host
  • ASP.NET Core Web Host
.NET Generic Host is recommended and ASP.NET Core template builds a .NET Generic Host on app startup.
ASP.NET Core Web host is only used for backwards compatibility.

// Host creation
public class Program
{
    public static void Main(string[] args)
    {
        CreateWebHostBuilder(args).Build().Run();
    }

    public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .UseStartup();
}

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