Amazon was founded in 1994 by Jeff Bezos and has since grown to be a massive online retailer. It generates over $75 billion in annual revenue, primarily from electronics, media, and general merchandise sales. Amazon has expanded into other businesses like Kindle e-books, web services, and fulfillment services. It uses strategic acquisitions and new product lines to maintain an advantage over competitors like Walmart and eBay. Amazon's decision to expand beyond core retail has enabled it to become a major tech company, though some argue it risks spreading resources too thin.