MVC Routing ?

In an ASP.NET application that does not use routing, an incoming request for a URL typically maps to a physical file that handles the request, such as an .aspx file. 


ASP.NET routing enables you to use URLs that do not have to map to specific files in a Web site. Because the URL does not have to map to a file, you can use URLs that are descriptive of the user's action and therefore are more easily understood by users.


The ASP.NET MVC framework uses the ASP.NET routing engine, which provides flexibility for mapping URLs to controller classes. You can define routing rules that the ASP.NET MVC framework uses in order to evaluate incoming URLs and to select the appropriate controller. You can also have the routing engine automatically parse variables that are defined in the URL, and have the ASP.NET MVC framework pass the values to the controller as parameter arguments. For more information


ROUTE : A route is a URL pattern that is mapped to a handler.


You typically do not have to write code to add routes in an MVC application. Visual Studio project templates for MVC include preconfigured URL routes. These are defined in the MvcApplication class, which is defined in the Global.asax file.