https://www.cnbc.com/2019/04/25/amazons-advertising-sales-growth-slowed-dramatically-in-q1.html > One of Amazon's most promising new business areas, advertising sales, appears to be slowing down. > The growth of Amazon's "Other" segment, which consists primarily of advertising sales, slowed dramatically to 36% in the first quarter from the previous year, at $2.72 billion. That's a big slowdown from 97% year-over-year growth last quarter, and over 100% growth for three consecutive quarters before that.