I am new with google Analytics have not done any test as yet, can I ask a question ? using cross domain tracking and user id, can I found a user id info associated with the website it came from, from using cross domain tracking.
I think that this answer from the GA forum might help you:
I also recommend that you read our articles on User ID in this topic on the Analytics help center:
- About the User ID feature
- Benefits of using the User ID feature
- User ID limits
- Session unification
- User ID reference
You can also that you post this question in the Google Analytics: Tracking Goals & Ecommerce board:
This board is for users of Google Optimize. I recommend that you post this question in the Account Management board section of the Google Analytics community.