What is the function of 'controller' in SFCC?

In Salesforce Commerce Cloud (SFCC), the function of a controller is to handle incoming requests and define the business logic associated with those requests. This is an integral part of the MVC (Model-View-Controller) architecture that SFCC follows. The controller acts as an intermediary between the view and the model, processing user input, invoking business logic, and coordinating the appropriate response based on the incoming request.

When a user interacts with the application—such as clicking a link, submitting a form, or navigating to a specific page—the request is routed to the appropriate controller. The controller then processes this request by executing the relevant business logic, which can include fetching data from the model, performing calculations, or updating the state of the application. Finally, it determines what view should be displayed to the user, effectively shaping the user experience based on how the request is processed.

Other options, while related to the overall functionality of an e-commerce platform, do not describe the role of the controller. Managing product inventory pertains more to backend data management and is typically handled by models. Generating reports usually falls under a separate reporting or analytics module rather than the controller's responsibilities. User authentication, while critical for security, is also a specific function that may involve separate authentication