Amazon shares sunk more than 7% in after-hours trading on Thursday despite the tech and e-commerce giant reporting a 14% increase in revenue in its fourth quarter. Advertising services revenue, which ...

Amazon's advertising business delivered $21.3 billion in revenue in the fourth quarter, growing 22% and narrowly beating Wall Street estimates for $21.2 billion. During the quarter, the company ...

Walmart isn’t generally thought of as an advertising business, but the retail giant now makes more money selling ads than ...

Major retailers are building entirely new businesses beyond the store. Here's what the rise of the omnivore retailer means for Amazon, Walmart and the future of retail.