Affiliate programs are supposed to be free money. A partner drives a sale, you pay a commission, everyone wins. Except when the same sale also shows up in your Meta dashboard as a paid conversion, and your GA4 report calls it "referral traffic," and now you're paying twice for one order without realizing it. That's the actual state of ecommerce analytics for brand with affiliate program setups at most DTC companies right now: three tools, three versions of the truth, and a finance team quietly panicking before the board meeting.