Q4 is the season your reporting is least trustworthy and most consequential. More spend moves, faster decisions get made, and the numbers you make them on are distorted in two separate ways at once. Most teams catch neither. A few catch one. The report that catches both is the difference between a profitable holiday and a post-mortem in January.

How to Win Black Friday and Cyber Monday With Attribution Data

Most brands walk into Black Friday and Cyber Monday and repeat last year's plan on instinct. The ones who win do something different: they reverse-engineer what actually drove sales the previous BFCM, then build this year's plan on that evidence instead of guesswork. If you have measurement and attribution data from last Q4, it is the most valuable asset you have going into this one. Here is what the data consistently shows about how BFCM sales really happen, and how to act on it.