Introduction For decades, product marketing in CPGhas been a diligent and loyal steward of marketing’s golden 5’Ps. Held up in every business school course, cereal boxes (or the like), and the brands behind them, taught clear lessons about how to engage customers based on Product, Price, Place, Promotion, and People.The physical shelf was the arena, and every brand knew how to compete. Then,starting in the early 2000s, brands entered a similar, but distinctly more complex, arena: E-commerce.