An online retailer is a business that sells products or services through an internet-based platform, rather than operating physical stores. These companies use websites and mobile apps to display their inventory, take orders, and process payments from customers around the world. They may also offer digital content, such as ebooks, music, or video streaming subscriptions. Online retailers often have a wider selection of products available for purchase than traditional brick-and-mortar stores, since they are not limited by physical space constraints. Additionally, many online retailers provide free shipping and easy returns, which can make the shopping experience more convenient for customers.