An online retailer is a business that sells products or services over the internet. Customers can browse a wide range of items on a website or app, add them to a virtual shopping cart, and complete their purchases using various payment methods. Popular examples of online retailers include Amazon, eBay, and Walmart. These retailers often provide detailed product descriptions, customer reviews, and images to help shoppers make informed decisions. Online retailers typically offer home delivery or in-store pickup options, making shopping convenient for consumers. They also frequently run promotions and discounts to attract customers.