Which type of activities can be added to activity rules in SAS?

In SAS (Sizmek Ad Suite), activity rules are used to define conditions for various actions, and they can incorporate several types of activities. Retargeting activities track user interactions with ads or websites to re-engage them later. Conversion activities measure specific user actions that indicate a desired outcome, such as a purchase or sign-up. Third-party activities allow for the integration of data from external systems or partners, providing a broader view of user behavior. Product-based activities, while a concept in advertising, are not a distinct activity type that can be directly added to activity rules within the SAS platform in the same way as retargeting, conversion, or third-party activities.