The activity where Amazon collects massive amounts of data to use to analyze customers is known as:
This refers to the use of data for analysis where the different sets of data are separated and sampled so as to monitor behavior.
With this in mind, we can see that because big companies make use of marketing analytics in order to correctly analyse their customers and what they are searching, what they like doing as a means to better serve their customers.
Read more about marketing analytics here:
https://brainly.com/question/26199645