E-commerce is simply selling your products and services online. This can be made possible by creating a website where you are allowed to post or display your products to let your potential customers know that you are selling a particular product. If you are good at selling, then this must be a good internet business idea for you.
More information regarding E-commerce according to Wikipedia:
Electronic commerce, commonly known as (electronic marketing) e-commerce or eCommerce, consists of the buying and selling of products or services over electronic systems such as the Internet and other computer networks. The amount of trade conducted electronically has grown extraordinarily with widespread Internet usage. The use of commerce is conducted in this way, spurring and drawing on innovations in electronic funds transfer, supply chain management, Internet marketing, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems. Modern electronic commerce typically uses the World Wide Web at least at some point in the transaction's lifecycle, although it can encompass a wider range of technologies such as e-mail as well.
What is good with doing ecommerce is it does not require big amount of money in terms of marketing. It is relatively inexpensive and it is easy to reach the target market. With ecommerce, consumers can simply research your product online and purchase your goods at their own convenience. With ecommerce business, you can reach your consumers easily and get result quickly.