It has configuration classes to reduce clutter code in the Global.asax Application_Start method. It contains following files:
Related to security settings, including sites for OAuth login.
Related to register bundles for the bundling and minification
To register global MVC filters.(by default HandleErrorAttribute is registered)
Related to MVC Route configuration
Used to register Web API routes and configuration settings
An MVC structure inside the application to partition our web application into smaller parts.
To put CSS and other static contents
Contains the controller classes
For images, It is being referenced from the Content\Site.css by default.
Contains view model and domain model classes.
Related to the display of the application (UI).