An online marketplace (or online e-commerce marketplace) is a type of e-commerce website where product or service information is provided by multiple third parties. Online marketplaces are the primary type of multichannel ecommerce and can be a way to streamline the production process.
In an online marketplace, consumer transactions are processed by the marketplace operator and then delivered and fulfilled by the participating retailers or wholesalers. These type of websites allow users to register and sell single items to many items for a "post-selling" fee.
In general, because marketplaces aggregate products from a wide array of providers, selection is usually more wide, and availability is higher than in vendor-specific online retail stores. Since 2014 online marketplaces have become abundant. Some online marketplaces have a wide variety of general interest products that cater to almost all the needs of the consumers, others are consumer specific and cater to a particular segment.
Online marketplaces are information technology companies that act as intermediaries by connecting buyers and sellers. Examples of prevalent online marketplaces for retailing consumer goods and services are Amazon, Taobao and eBay. On the website of the online marketplace sellers can publish their product offering with a price and information about the product's features and qualities. Potential customers can search and browse goods, compare price and quality, and then purchase the goods directly from the seller. The inventory is held by the sellers, not the company running the online marketplace. Online marketplaces are characterized by a low setup cost for sellers, because they do not have to run a retail store. While in the past Amazon Marketplace has served as a role model for online marketplaces, the expansion of the Alibaba Group into related business such as logistics, e-commerce payment systems and mobile commerce is now trailed by other marketplace operators such as Flipkart.
For consumers, online marketplaces reduce the search cost, but insufficient information on the quality of goods and an overloaded goods offering can make it more difficult for consumers to make purchasing decisions. Consumers' ability to make a purchasing decision is also hampered by the fact that an online marketplace only allows them to examine the quality of a product based on its description, a picture and customer reviews. (wikipedia)