What is the difference between UseStaticFiles, UseSpaStaticFiles, and UseSpa in ASP.NET Core 2.1?

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Static files, such as HTML, CSS, images, and JavaScript, are assets an
ASP.NET Core app serves directly to clients. Some configuration is
required to enable serving of these files.

  • UseStaticFiles – Serve files inside of web root (wwwroot folder)

  • UseSpaStaticFiles – Serve static file like image, css, js in asset
    folder of angular app

  • UseSpa – let asp.net core know which directory you want to run your
    angular app, what dist folder when running in production mode and
    which command to run angular app in dev mode

Example 

services.AddSpaStaticFiles(configuration =>
{
 configuration.RootPath = "ClientApp/dist";
});

app.UseSpa(spa =>
{
    // To learn more about options for serving an Angular SPA from ASP.NET Core,
    // see https://go.microsoft.com/fwlink/?linkid=864501

    spa.Options.SourcePath = "ClientApp";

    if (env.IsDevelopment())
    {
        spa.UseAngularCliServer(npmScript: "start");
    }
});

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