Electronic commerce classification can conduct transactions between businesses and consumers, between locations between them, between companies and government, or vice versa of all these transactions.

1. Transactions between business and consumers: here, consumers interact, contact, or buy products from electronic retailers. Here sellers usually sell products to unknown and entrusted consumers. Therefore, trust, security, and privacy perceptions play an essential role in these types of transactions.

2. Transactions between businesses: usually refers to the implementation of electronic transactions between business organizations. This includes exchanging products, services, or information between companies and the management of many business processes (from planning, marketing, inventory, and order execution).

3. Transactions between business and government: here, the two parties are government and industry. This relationship usually refers to transactions, purchases, and procurement between companies and the government. Governments can buy or procure from business organizations through online communication channels.

4. Government-to-consumer transactions are the presentation and provision of all government information and services to citizens and business organizations.

5. Transactions between consumers and business and between consumers themselves: this refers to the exchange between consumers and companies or between consumers. Customers can post their projects, goods, and services to attract businesses or customers who can make their offers or buy.

Of all the above transactions, the most studied are between businesses and consumers and between companies themselves. On the other hand, the boundaries between e-commerce and e-business are not clearly defined in reality. Many of the considerations presented in this thesis apply not only to e-business but also to e-commerce.
E-commerce also includes electronic transactions between citizens, businesses, and governments. Actions regarding these transactions may consist of the following steps:
1. Consumers seek opportunities, information, and goals;
2. Seek to make a selection;
3. Compare different criteria, policies, and assertions;
4. Select the goods and services;
5. Consumers buy (decide to buy);
6. The seller agrees to complete the transaction;
7. The seller sends the goods/services
8. The buyer receives the goods/services;
9. The seller supports / maintains/provides after-sales service