Marketing Attribution

Marketing attribution is the discipline of deciding which marketing touchpoints get credit for a conversion when more than one channel was involved. Most users do not convert on first contact, so an FTD, a funded trading account, or a challenge purchase typically follows several touches across paid search, paid social, organic, email, and affiliates. Attribution models codify how credit is distributed across these touches and feed the resulting weights into compensation, reporting, and budget decisions. The choice of model has measurable financial consequences, particularly when affiliates are one node in a longer journey.

Common models include first-click vs last-click (credit to the earliest or latest touch), linear (equal credit across all touches), time-decay (more credit to touches closer to conversion), position-based (heavier weight on first and last), and data-driven attribution (weights derived from observed lift). For affiliates specifically, affiliate attribution usually combines an attribution model with an attribution window that defines how far back the lookup runs. Multi-touch attribution is the umbrella for any model that distributes credit across more than one touch.

The pitfalls are mostly economic and political. Last-click is simple but tends to overweight bottom-funnel channels and starve top-of-funnel affiliates of credit they earned. First-click does the opposite. Linear and time-decay distribute more fairly but complicate commission calculation because conversion value has to be split across multiple parties. Data-driven attribution requires enough conversion volume to be statistically meaningful, and the algorithms are often opaque, which makes them difficult to defend in commission disputes. Whichever model is chosen, it must be encoded explicitly in the affiliate agreement so partners understand how they will be paid.