Amazon’s Dubious Ad Tech Expansion

Amazon’s decision to stuff its search results and product pages with ads over the past several years might annoy some shoppers like me, but it’s paid off handsomely for the company. Those ads are thought to account for the lion’s share of the $50 billion in ad revenue it is expected to have taken in last year. 

Now Amazon is going to start selling the technology behind the ads to other online retailers—but the experiment could prove to be more trouble than it’s worth.