Cartella is built on the Microsoft ASP.NET MVC web development framework and uses the Razor view engine to generate views. By customizing the view layer, you can change the look and feel of individual Cartella modules without affecting the integrity of the product.

Cartella pages are assembled using a master page and a collection of partial-view pages, enabling customization at several levels. Some simple changes can be made via cascading style sheets (CSS), but more elaborate customization—like adding new functionality to a site, rather than merely changing its look and feel—entails changes to the views.