What is a major benefit of using Sitefinity MVC widgets?

The major benefit of using Sitefinity MVC widgets is that they enhance performance and facilitate easier testing. MVC (Model-View-Controller) architecture separates the application into three interconnected components, which allows for improved application organization. This structure not only boosts performance due to better management of resources but also makes it easier to conduct unit tests on individual components of the application.

By isolating the business logic from the UI (user interface), developers can create maintainable and reusable components, enabling quicker modifications and updates without affecting the overall system. This modularity also allows for more straightforward debugging and testing, as developers can focus on individual components rather than the entire application at once.

In contrast, the other options do not align with the primary advantages of MVC widgets. For instance, while they can display content, they do not provide a combined view of all content, and they do not restrict customization options. Additionally, MVC widgets are versatile and applicable beyond just e-commerce, addressing a wide range of website functionalities.