E-commerce is buying and selling of products or services over electronic systems such as the internet and other computer networks. There are two major categories of e-commerce: business-to-consumer (B2C) and business-to-business (B2B). B2C involves online transactions between businesses and individual consumers, while B2B involves transactions between businesses. E-commerce provides benefits to both organizations and consumers, such as global reach, cost reduction, and more products/services at cheaper prices. Common applications include online shopping, banking, auctions, and use of shopping cart software. While e-commerce enables 24/7 access and comparison shopping, issues like inability to examine products personally and credit card theft exist