Has the affiliate channel outgrown the CPA last click model?
It’s well known that the affiliate channel works on a cost per acquisition (CPA) model, meaning that when the desired action is completed, be it a sale, lead or quote, the affiliate is paid.
To be able to attribute the sale to an affiliate there needs to be an agreed metric by which a sale can be attributed.
Typically this is a ‘last click wins’ model: if the last click is attributed to a particular publisher then they receive the commission.