We are working with an events management & registration vendor that handles all events related items for a big conference (20k attendees).
The actual registration process, including the payment, happens on their domain instead of our conference website. We do a lot of email, remarketing and social media marketing for the event and what I really want to do is measure those efforts based on how much revenue each channel brings in GA.
What would be the best way to get all transaction data into GA?
Option #1 - We might be able to add GA tracking to the 3rd party platform confirmation page and then setup a separate GA property to gather the data.
Option #2 - We might be able to redirect to the conference website for the confirmation page and add the transaction data to that domain's GA property.
Are there other options or which would be better?
I am also concerned with attribution since visitors will bounce back and forth from domain (conference site) to domain (3rd party reg site) before purchasing the registration.