有一项 Analytics 功能可以帮助您将自己创建的标识符与具体客户关联起来，进而将同一客户在不同设备和平台上的各种互动中的行为联系起来。这项功能是什么？

User-ID is the correct answer because it allows you to associate your own unique, persistent identifiers with individual customers. This enables you to track a single user's journey across different devices and platforms, providing a unified view of their behavior. Audience triggers are used to activate events when a user meets certain criteria, not to link identifiers. Predictive audiences use machine learning to forecast future user behavior, which is different from associating identifiers. Device ID refers to an identifier specific to a device (like an advertising ID), but it doesn't solve the problem of linking a single user across multiple devices or platforms unless explicitly tied to a User-ID.