What mechanism allows the application to keep track of user interactions between requests?

The correct answer is sessions, as they are a fundamental mechanism for maintaining state in web applications, particularly those following a request-response cycle like traditional web development in OutSystems.

Sessions allow an application to store user-specific data on the server for the duration of the user's interaction with the application. When a user logs in or performs an action, a unique session ID is often created and linked to that user. This session ID is then used to track the user's state, preferences, and interactions as they navigate through different pages or endpoints of the application. Each subsequent request from the user's browser includes this session ID, enabling the server to look up and retrieve the appropriate session data.

In contrast, while cookies can also be used to persist information across requests, they operate differently. Cookies are stored on the client side and sent to the server with each request, whereas sessions are typically managed server-side and are more secure, as sensitive data does not need to be exposed to the client. Tokens might be used for stateless authentication, but they do not inherently manage user interaction states in the way sessions do. Transmissions do not pertain to this context specifically and do not represent a mechanism for tracking user sessions or interactions.

Thus, sessions are the most effective and commonly