Ex. 4.20. Write an essay on one of the following topics:

1. What electronic commerce is and how it has evolved.
2. The international nature of electronic commerce and the challenges that arise in engaging in electronic commerce on a global scale.
3. What types of business processes are well suited to electronic commerce?
4. Describe the three categories of electronic commerce that are most commonly used.
5. Choose two successful online businesses, whose revenue are not based on advertising, and describe each of them.
6. Choose two or more businesses, which started e-commerce activities in the late 1990s, and are successful nowadays.
7. Advantages and disadvantages of electronic commerce.