I want to track adwords users, who register to my website.
I want to know which ad was clicked and led to a registration and connect this information to the user.
I could f.e. modify the final URL of each of my ads and append a unique query string arg, f.e. my final URL would look something like this for ad1:
Then if the user registers I could check for the query arg adwords and save this information. This would work and I would know for ever that this user came from adwords ad1, I could also collect data on how much value that user generates over time.
My question is now, is there already a similar system from google, which I could use to achieve this?