Amazon.com, Inc. (AMZN), headquartered in Seattle, Washington, is the world's largest online retailer and marketplace. The company engages in the retail sale of consumer products, advertising, and subscription services through online and physical stores. With a market cap of $2.4 trillion, its products include books, music, computers, electronics, and numerous other products. Amazon offers personalized shopping services, web-based credit card payment, and direct shipping to customers. It also operates a cl ...