I read through the integration guide for Google Analytics hoping that cross populating ID's from Marketo to GA would answer my question. However, it looks like the only way to get Source/Medium data is to use UTM parameters in the URL. What I would like to confirm is - at the time of a form completion (ours are embedded on our site pages), is it possible to capture Source/Medium data onto a lead record if there are no UTM parameters present? We are interested in tracking the source of the session, regardless of where they convert. If this is covered somewhere, I would greatly appreciate a quick link. Thanks for the help!