At its core, electronic commerce or e-commerce is simply the buying and selling of goods and services using the internet, when shopping online. However, the term is often used to describe all of a seller's efforts, when selling products directly to consumers. The E-commerce marketplace or the online e-commerce marketing is a place or a website where one can find different brands of products coming from multiple vendors, shops or person showcased on the same platform. There are three main types of e-commerce: business-to-business (websites such as Shopify), business-to-consumer (websites such as Amazon), and consumer-to-consumer (websites such as eBay). The standard definition of E-commerce is a commercial transaction which is happened over the internet. Online stores like Amazon, Flipkart, Shopify, Myntra, Ebay, Quikr, Olx are examples of E-commerce websites. By 2020, global retail e-commerce can reach up to $27 Trillion.