A simplistic ASP .NET Core Web Application

Startup.cs

// Program.cs showing Main method
public class Program
{
    public static void Main(string[] args)
    {
        CreateHostBuilder(args).Build().Run();
    }

    public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .ConfigureWebHostDefaults(webBuilder =>
            {
                webBuilder.UseStartup<Startup>();
            });
}

// Startup.cs
public class Startup
{
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    public void ConfigureServices(IServiceCollection services)
    {
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        app.UseRouting();
        
        // app.Cors();

        // app.UseAuthentication()
        
        // app.UseAuthorization();

        app.UseEndpoints(endpoints =>
        {
            // Default Endpoint
            endpoints.MapGet("/", async (context) =>
            {
                await context.Response.WriteAsync($"Hello World");
            });

            // Name Token Endpoint
            endpoints.MapGet("/{name}", async (context) =>
            {
                // Read input token and add it to response
                var name = context.Request.RouteValues["name"];
                await context.Response.WriteAsync($"Hello {name}");
            });
        });
    }
}