I would like to track the leads acquisition channel where they click on our banners on our partners website ( completely different domain name eg adc.com.au) which takes them 123.com.au (our website that has munchkin code) which then has our marketo form.
Example: if visitor clicks on adc.com.au and clicks on a banner that we have put up it takes them to 123.com.au (our website) and fill out our marketo form, ID 4567.
How will I know that they originated form adc.com.au
Can you please help me how can i achieve it?
P.s there are no marketo landing pages. The forms are embedded in an iframe on our website