Amazoncom Uses __________ to Compare Each User's Purchases with the Purchases

Multiple Choice

Amazon.com uses __________ to compare each user's purchases with the purchases of other users with similar preferences to create a list of purchase recommendations. Based on a customer's desire to purchase an author's e-book for her Kindle, Amazon might recommend an e-book by a similar author within the same genre.

A) real-time e-commerce
B) connectivity
C) collaborative filtering
D) interactive marketing
E) personalization