You’re a marketing manager for your company’s website, JesseJames.com, an online seller of books about American History. Google Analytics has shown that the exit rate on the checkout page is high. In a meeting with the developer team, you explained that this means the user experience is good up to the checkout page. Then, making the purchase becomes too too diﬃcult for most users. You’ve recommended that they implement a one-click-to-buy option that uses information stored in the users account. Which type of user personalization is this known as?