What is the function of a trigger in a smart campaign?

The function of a trigger in a smart campaign is to activate when a web page is visited or a form is filled out. Triggers are essential components in Marketo that allow users to automate responses and actions based on specific actions taken by leads or contacts. When a lead interacts with a specified web page or submits a form, it serves as an immediate signal for the smart campaign to proceed with predefined actions, such as sending an email, changing a lead's status, or adding the lead to a list. This feature enhances automation by allowing campaigns to respond dynamically to user behavior.

The other options describe different aspects of campaign functionality but do not accurately reflect the specific role of a trigger in a smart campaign. For instance, while a threshold might initiate activities in some contexts, triggers specifically relate to user actions. Notifications about campaign results are typically handled through reports and dashboards, not triggers. Likewise, altering campaign settings based on user behavior falls outside the typical definition of a trigger’s role, which is focused more on execution based on predefined interactive criteria rather than adjusting settings.