Online marketplaces are digital platforms that facilitate buying and selling goods and services between consumers and businesses. They provide a convenient way for users to browse a wide variety of products, often from multiple sellers, all in one place. Popular examples include Amazon and eBay, which have transformed the way people shop by offering extensive selections and competitive pricing. These platforms not only benefit consumers by providing access to diverse products but also empower small businesses and individual sellers to reach a global audience. By leveraging technology, online marketplaces streamline transactions and enhance the shopping experience, making it easier for everyone involved.