This Analytics feature allows you to connect individual customers' behavior across various interactions on different platforms and devices by letting you associate your own identifiers with your individual customers.

Correction Note: The correct answer to this question is User-ID. The explanation below clarifies this and addresses the provided options.

Analysis of Correct Answer(s)

The feature described is User-ID. This is the specific Google Analytics function designed to unify user journeys across multiple sessions, devices, and platforms.

• Function: The User-ID feature lets you associate a persistent, non-personally identifiable ID that you generate (e.g., from your customer database for logged-in users) with that user's activity.
• Benefit: When a user logs in on their desktop and later on their mobile app, Analytics uses the same User-ID to recognize them as a single user, not two different ones. This provides a more accurate user count and a complete view of the customer journey, directly matching the question's description of connecting behavior "across various interactions on different platforms and devices."

Analysis of Incorrect Options

• Audience triggers: This feature creates an event when a user's actions cause them to become a member of an audience. For example, you can trigger a new_high_value_customer event. It is a reactive feature based on audience membership, not a primary user identification tool for cross-device tracking.
• Device-ID: This identifies a specific device or browser instance, but it cannot connect a single user's activity between different devices.
• Predictive audiences: These are audiences created by Google's machine learning to predict future user behavior (e.g., likelihood to purchase). This feature does not involve associating your own identifiers for cross-device analysis.