Send user IDs

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The User-ID feature lets you associate your own identifiers with individual users so you can connect their behavior across different sessions and on various devices and platforms.

This article describes how to send user IDs from your website once you've generated the user IDs. To learn more about the User-ID feature, see Measure activity across platforms. To learn how to set a user ID for an app, see Set a user ID instead.


Before you begin

Send user IDs