E-business refers to conducting business online through e-commerce. There are different models of e-business including business-to-business (B2B), business-to-consumer (B2C), consumer-to-business (C2B), and consumer-to-consumer (C2C). Companies use strategies like online marketing, sales, procurement, and customer service to succeed in e-business. Security and privacy are important for building customer trust in e-commerce transactions. Organizations can access the internet through intranets, extranets, portals, and kiosks.