The document discusses how to build better relationships between advertising representatives and buyers by helping them communicate more effectively. It explains that representatives often talk about metrics like traffic, engagement, and gross rating points (GRPs), while buyers prefer return-on-investment metrics like cost per thousand (CPM), clickthrough rate, cost per impression (CPI), cost per click (CPC), and cost per order (CPO). The document then defines each of these key performance indicators that representatives and buyers use to discuss campaigns.