Which feature allows programmatic interaction with the platform identity graph from an external application?

The identity service API is specifically designed to provide programmatic access to the identity graph in Adobe Experience Platform. This API enables external applications to interact with the identity data, allowing them to perform functions such as creating, updating, deleting, and querying identities.

Through the identity service API, organizations can ensure that the identity data is seamlessly integrated and utilized across various applications and services, thereby enhancing the capabilities for user segmentation, targeting, and personalization activities. This API provides a robust mechanism for managing identities within a connected ecosystem, making it essential for any application that needs to leverage identity insights from the Adobe Experience Platform.

The other options represent functionalities that do not directly correspond to programmatically manipulating the identity graph. For example, the user activity API focuses on tracking and analyzing user interactions, while the data synchronization service is aimed at syncing data between different systems. The UI interaction API relates to user interface interactions rather than direct manipulation of identity data, making them less relevant in this particular context.