MvcCodeRouting — Namespace-based Modularity for ASP.NET MVC and Web API

Break your application into as many parts as you want, using namespaces and projects
URL generation and Views location are relative to the module
Embed your views which can be overridden by files views in the host application
Create reusable portable modules

Convention over configuration Automatic Routing

Routes are automatically created for you using convention over configuration
Break away from the convention using attribute routes
Default constraints for primitive types that can be overridden on a per-parameter or per-module basis
Intelligent grouping of similar routes for efficient matching
Formatting of routes (e.g. to lowercase, hyphen-separated, underscore-separated, etc)