E-business means conducting business activities using computer networks. It provides benefits of speed, convenience, and global reach. There are four types of e-business: business to business (B2B), business to customer (B2C), customer to customer (C2C), and intra-business (intra-B). Business organizations can be formed to earn income or support public programs. Major e-business portals allow different types of transactions between businesses, customers, and within businesses.