This document discusses the different types of e-commerce systems, including B2B, B2C, C2B, and C2C. B2B refers to business-to-business e-commerce, which makes up about 80% of e-commerce transactions. B2C involves businesses selling directly to consumers online. C2B allows consumers to post projects and solicit bids from companies. C2C enables individuals to buy and sell from each other using online payment systems. The document also briefly mentions several other types like m-commerce, government-to-government, and government-to-citizen e-commerce.

1. Types of different E-commerce systems

2. Whatis E-commerce? E-Commerce is doing the work of commerce electronically , buying and selling products or services over electronic systems such as the internet

3. Types of E-commerce systems :B2B (Business-to-Business)B2C (Business-to-Consumer)C2B (Consumer-to-Business)C2C (Consumer-to-Consumer)

4. B2B (Business-to-Business)B2B e-commerce is simply defined as e-commerce between companies. This is the type of e-commerce that deals between businesses.About 80% of e-commerce is of this type, and most experts predict that B2B ecommerce will continue to grow faster than the other types.

5. B2B Examples

7. B2C (Business-to-Consumer)Businesses selling to the general public through catalogs using shopping cart software.B2C e-commerce reduces costs.B2C allowing consumers to find the most competitive price for a product or service.

8. B2C Examples

10. C2B (Consumer-to-Business)A consumer posts his project with a set budget online and within hours companies review the consumer's requirements and bid on the project.The consumer reviews the bids and selects the company that will complete the project

12. C2C (Consumer-to-Consumer)There are many sites offering free service , forums where individuals can buy and sell using the online payment systems like PayPal , E-gold

13. There are other types for E-commercem-c (mobile commerce)G2G (Government-to-Government)G2E (Government-to-Employee)G2B (Government-to-Business)B2G (Business-to-Government)G2C (Government-to-Citizen)C2G (Citizen-to-Government)

14. Thanks for listeningMohamed FathyHussien el SayedMohamed Atef