Amazon is a wonderful business model to study.  One specific area as a marketer that appeals to me is its ability to create ways to expand its data sets on its customers.  Amazon uses its excellent Prime service as a way to collect that valuable data - and increase the basket value of products that its Prime customers will buy over time.  Smart marketing.  

Co-author of "The New Marketing Analytics" David Dirks discusses his observations & insights on data & managerial analytics in his short podcast sessions.  You can reach him at:

[email protected]