Why have Map() when you can just branch with if/switch?

Question

ASP.NET

Why does the WebApplication class in ASP.NET Core have a Map() extension method?
After all, there are simple constructions like if/switch ?
Something like

app.Use(async (context, next) =>
{
    string? path = context.Request.Path.Value?.ToLower();
    if (path == "/date")
    {
        await context.Response.WriteAsync($"Date: {DateTime.Now.ToShortDateString()}");
    }
    else if (path == "/time")
    {
        await context.Response.WriteAsync($"Date: {DateTime.Now.ToShortTimeString()}");
    }
    else
    { 
        await next.Invoke();
    }
});

Answer 1

A real apishka is about a dozen controllers with at least 4 actions (CRUD), with common error handling, authentication, authorization, and so on.
Ifas and switches in a startup will have a noble footcloth, otherwise you can get by with one extension method that, when the application starts, will run through the controllers and collect the routing.