E-commerce refers to the buying and selling of products or services electronically, such as over the internet. There are three main types of e-commerce: business to business (B2B), business to customer (B2C), and customer to customer (C2C). E-commerce provides advantages like lower costs, higher margins, and better customer service, but also disadvantages such as security issues, system scalability problems, and customer relations challenges. Research has examined how e-commerce has impacted retail industries by achieving lower prices and changing the number and types of producers in an industry.

1. WHAT IS E COMMERCE ?
E-commerce refers to the buying and selling of products or services over
electronic systems such as the Internet and other computer networks. E-
commerce is based on techniques such as electronic funds transfer,
supply chain management, Internet marketing, and online transaction
processing, electronic data interchange (EDI), inventory management
systems, and operating systems and automated data collection

2. TYPES OF E- COMMERCE
1. Business to Business (B2B)
Business-to-business (B2B) defines commerce transactions between
businesses to business, like between a wholesaler and a manufacture and in
between wholesaler and a retailer. In short we can say that doing business
from one business to other business
2. Business to Customer (B2C)
The business which is done done directly from business to the customer is call
business to Customer, like dell company directly deals with the customer for
selling purpose.
3. Consumer to Consumer (C2C) It is the simple and easy process of doing
business, it means doing business in between customer to customer, example
ebay.

3. ADVANTAGES OF E-COMMERCE
Advantages:
 Lower cost
 Economy
 Higher Margins
 Better Customer Service
 Productivity gain
 Team works
 Information Sharing, Convenience, And Control

4. DISADVANTAGES OF E-COMMERCE
Disadvantages:
 Security
 System and Data Integrity
 System Scalability
 E–commerce Is Not Free
 Consumer Search Is Not Efficient or Cost–effective
 Customer Relations Problems
 Products People won't buy online
 Corporate Vulnerability

5. E-commerce and the Market
Arrangement of Retail Industries
in today’s world.
The fast-growing body of research has looked at how the emergence and spread
of e-commerce prices, has achieved much lower than the business impact of
electronic commerce on the number and type of producers working in the industry