eCommerce (electronic commerce) is the buying and selling of goods and services on the Internet, especially the World Wide Web. In practice, this term and a newer term, eBusiness, are often used interchangeably.
When the Web first became well-known among the general public in 1994, many journalists and pundits forecast that e-commerce would soon become a major economic sector. However, it took about four years for security protocols to become sufficiently developed and widely deployed (during the browser wars of this period). Subsequently, between 1998 and 2000, a substantial number of businesses in the United States and Western Europe developed rudimentary websites.
Although a large number of "pure e-commerce" companies disappeared during the dot-com collapse in 2000 and 2001, many "brick-and-mortar" retailers recognized that such ompanies had identified valuable niche markets and began to add e-commerce capabilities to their web
See also a short blurb about the ecommerce development skills I have.