What key feature distinguishes trigger campaigns from batch campaigns?

The key feature that distinguishes trigger campaigns from batch campaigns is that trigger campaigns require at least one user action to initiate. This means that trigger campaigns are designed to respond to specific behaviors or interactions from users, such as opening an email, filling out a form, or clicking on a link. When a user takes an action that meets the defined criteria, the trigger campaign is activated, sending personalized communication to that user based on their action.

In contrast, batch campaigns are executed according to a predefined schedule and can target large groups of recipients simultaneously, regardless of their individual actions. This fundamental difference in initiation is what sets trigger campaigns apart, allowing them to be more timely and relevant to the user’s behavior.

While the other options address characteristics of campaigns, they do not accurately highlight this crucial difference between how and when these campaigns are initiated. For instance, trigger campaigns can run multiple times based on user actions, making the distinction around user-driven initiation particularly significant.