Hello all!
I have a user_id that I assign to users on the site in gtag(). This is my task. Let’s imagine that there is a store A, it has users with user_id, who, for example, made an order on the site.
If, for example, we collaborated with store B and want them to run advertisements for those who bought goods in store A, ala “You bought goods on site A, we have a discount for you!” If I import user_id into store B’s account, will Google recognize account A’s audience based on user_id alone?