Amazon was founded by Jeff Bezos from his garage in Bellevue, Washington,[7] on July 5, 1994. Initially an online marketplace for books, it has expanded into a multitude of product categories, a strategy that has earned it the moniker The Everything Store.[8] It has multiple subsidiaries including Amazon Web Services (cloud computing), Zoox (autonomous vehicles), Kuiper Systems (satellite Internet), and Amazon Lab126 (computer hardware R&D). Its other subsidiaries include Ring, Twitch, IMDb, and Whole Foods Market. Its acquisition of Whole Foods in August 2017 for US$13.4 billion substantially increased its footprint as a physical retailer.[9]Amazon has earned a reputation as a disruptor of well-established industries through technological innovation and "aggressive" reinvestment of profits into capital expenditures.[10][11][12][13] As of 2023, it is the world's largest online retailer and marketplace, smart speaker provider, cloud computing service through AWS,[14] live-streaming service through Twitch, and Internet company as measured by revenue and market share.[15] In 2021, it surpassed Walmart as the world's largest retailer outside of China, driven in large part by its paid subscription plan, Amazon Prime, which has over 200 million subscribers worldwide.[16][17] It is the second-largest private employer in the United States.[18]