I've been looking around at various threads on the community and seems there are 2 main ways people are building Marketo programs for digital UTM tracking - either using "Fills Out Form" with a "Referrer" constraint OR using UTM values as fields. For example, if you want to track Paid Social through LinkedIn. We are currently using the latter - so we have the standard UTM hidden fields on our forms and we're using them as filter constraints like this:
Wondering if that's the best method, or if using Fills Out Form with a Referrer constraint is better, so something like this instead where the UTM query string is specified in the Referrer.
Pros/Cons to each method?