Amazon is moving into seemingly every industry imaginable, and advertising is one of them. The eCommerce giant is poised to take on ad titans Google and Facebook to upend the advertising duopoly. The most recent holiday season was the first real test at how well Amazon was able to woo advertisers to its platform. This report looks at how B2C marketers spent ad dollars on Amazon during holiday 2017 and how Amazon's ads business is meaningful to the company's future growth potential.