The purpose of setting up 'User ID' tracking is to gather data on signed-in users across multiple devices and sessions. By implementing User ID tracking, businesses can recognize and analyze interactions from the same user regardless of the device or session they are using. This creates a more comprehensive view of user behavior and engagement.
With this system in place, companies can see the full journey of a user, including how they switch between devices or sessions. This is particularly valuable for understanding user engagement and improving the overall user experience. It helps in consolidating user actions to provide insights into long-term behavior rather than just isolated incidents.
In contrast to tracking anonymous visitors, which does not offer insights into individual user behavior, User ID tracking focuses specifically on known users who have logged in. Additionally, segmenting users based on geographic location does not directly relate to tracking individual user behavior across devices. Lastly, while understanding engagement is crucial, it is an outcome of the insights provided through User ID tracking rather than its primary purpose.