Visualforce can be defined as the user interface for the Force.com platform. It is a component-based framework that can include over 100 in-built components. It includes a tag-based markup language, and each Visualforce tag corresponds to a page or a field.
The Visualforce framework works on the standard MVC paradigm. It is possible to have tight integration with the database and also deploy auto-generated controllers for database objects. Developers can use Apex codes to write their own controllers. It is also possible to access AJAX components, or they can create their own components.
