A multitude of rulers is not a good thing. Let there be one ruler, one king.
There’s a lot more to a web application than just a request/response sequence. If it were as simple as that, with a well-done set of ASP.NET MVC controllers you would be all set. Unfortunately, things are a bit more complex. An effective ASP.NET MVC application results from the effective consideration and implementation of various aspects, including Search Engine Optimization (SEO), state management, error handling, and localization, just to name a few (and fairly important) ones.
This chapter is a collection of distinct and, to some extent, self-contained topics, each touching on an aspect that many ASP.NET MVC applications ...