eCommerce came to prominence in the internet revolution of 2001, when the developing technology enabled customers to safely shop online. Selling products online lowers the costs and enables retailers to reach global audience. One of the first and best known ecommerce sites is Amazon, that started in 1995 as an Internet bookstore, but over the years evolved in a virtual shopping mall, where you can buy anything and even establish your own sub stores. Forecast says that by 2020, ecommerce will be worth well over 600 billion US$ in United States alone.