Ebay is an online auction site that has been in operation since 1995. It is a multinational e-commerce corporation based in San Jose, California, and offers consumer-to-consumer and business-to-consumer sales services via its website. Ebay allows users to buy and sell items in an auction-style format, with the option of using a 'Buy it Now' feature for fixed-price purchases. Ebay also provides services such as payment processing, shipping, and customer service.