Amazon’s ‘crown jewel’ is that this enterprise that doesn’t get practically sufficient consideration 

Amazon.com Inc. is renowned for its retail and cloud-computing divisions, but what about its advertising business?

At less than 10% of Amazon’s

AMZN total sales, ads are often overlooked by investors — a big mistake, according to Needham analyst Laura Martin, who called Amazon’s ad business its “crown jewel” in a note Thursday.