What percentage of Amazon's global sales are driven by recommendation engines?

• A. 50% of total global sales.
• B. 15% of total global sales.
• C. 5% of total global sales.
• D. 35% of total global sales.

Answer: (D)

Recommender systems shape what customers see and buy by surfacing relevant products across key shopping moments—homepage, product pages, cart, and emails—so they influence a large share of purchases. For a platform like Amazon, this personalized guidance helps convert more views into purchases and often increases the total value of orders, since suggested items are closely aligned with a shopper’s interests and past behavior. The figure most commonly referenced for how much this drives sales is about 35% of global sales, reflecting the substantial role recommendations play in driving revenue. Numbers at the high end (like half of all sales) would imply recommendations alone account for most purchases, which isn’t how traffic and shopping behavior work, while single-digit or low-teens figures underestimate the measurable lift that personalized suggestions provide.