Valid use cases for audience activation within the SAP Customer Data Platform include:

Running marketing campaigns on social media platforms: Marketers can activate audiences to export data into external applications like social media platforms to run marketing campaigns1.

Running targeted email campaigns based on customer activities and preferences: Audiences can be used to run targeted email campaigns that are based on customer actions and choices1.

Updating customer loyalty level in a loyalty system: While not explicitly stated in the provided resources, updating customer loyalty levels is a common use case for audience activation, as it involves using customer data to personalize and improve customer experience.

References = The use cases are supported by the SAP Customer Data Platform’s learning resources, which detail the process of creating audiences and the purposes for which they can be activated12.