- B2B (Business-to-Business) :
In B2B, companies transact with each other. This includes the companies selling their product to wholesalers, distributors, etc
- B2C (Business-to-Consumer) :
This is usually when average businesses transact with the customer. This is done through the shopping cart softwares and the amount involved in the transactions is usually low.
- C2B (Consumer-to-Business) :
In this, a consumer places the product on the net. The companies willing to buy this product bid for it. The comsumer can then decide, depending upon the bid, which company to sell it to.
- C2C (Consumer-to-Consumer):
These kind of transactions are usually done at an individual level. Payments can be done with the help of online systems like PayPal.