What are the four types of consumer oriented applications of E-commerce? Discuss them briefly.

Four types of Consumer Oriented applications in E-Commerce are as follows:

1.  B2C (business-to-customer)

"Electronic commerce" is generally understood mostly as selling goods or services to people ("final consumers"). This is not, so far, the main part of online business. 

2.  B2B (business-to-business)

The consensus is universal: this is the priority; this is where the money is. It's quite true; so far the bulk of online business is in company-to-company transactions. 

3.  C2C (customer-to-customer)

Person-to-person transactions are the oldest form of e-business. They've been there from the starting, long before there was any widespread use of the Internet. They continue to be all over the place, quite invisible to anyone thinking that all business is on a website.  

4. C2B (customer-to-business)

The most significant activity in e-commerce isn't selling. It's buying. Quite often that doesn't mean buying online but checking, comparing, verifying quality and price before baying in traditional stores or services.