Amazon.com, Inc., the predominant e-commerce enterprise in the United States, is headquartered in Seattle, Washington. Established in 1995, the company commenced operations as an online bookseller and has since expanded its offerings to become the global leader in online retail by selection scale. It holds the position of the world's second-largest internet company and maintains an extensive portfolio of subsidiaries, including Alexa Internet, A9, Lab126, and the Internet Movie Database (IMDB).