The e-commerce is defined as buying and selling of products or services over electronic systems such as the Internet and other computer networks
1. B2B - Business to business:
Electronic commerce that is conducted between business organizations is referred to as business-to-business or B2B. for example, transactions between manufacturing industry with suppliers of raw materials.
2. B2C - Business to Consumer:
Electronic commerce that is conducted between traders and consumers is referred to as business-to-consumer or B2C. This is the type of electronic commerce conducted by companies such as Amazon.com, ebay.com, etc.