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Amazon, With Little Fanfare, Emerges as an Advertising Giant – WSJ
Amazon’s options for advertising include its delivery boxes. Photo: Amazon Amazon.com Inc. AMZN -0.25% handles nearly half of all online sales in the U.S., giving it a popular platform and a wealth of consumer data. Now it’s on track to become the next juggernaut of online advertising, and its rise threatens to upend Silicon Valley’s…