Commerce involves the exchange of goods and services between entities. E-commerce refers specifically to commerce conducted electronically online through means such as the internet. It allows buying and selling to occur with lower costs and global reach compared to traditional commerce. Various forms of e-commerce include business to business, business to consumer, and consumer to consumer. While e-commerce provides benefits like reduced costs and access to global markets, it also poses risks such as the inability to examine products physically and potential credit card theft.