Electronic commerce or ecommerce is a term for any type of business, or commercial transaction, that involves the transfer of information across the Internet. It covers a range of different types of businesses, from consumer based retail sites, through auction or music sites, to business exchanges trading goods and services between corporations. It is currently one of the most important aspects of the Internet to emerge.
Business to Business or B2B refers to electronic commerce between
businesses rather than between a business and a consumer. B2B businesses
often deal with hundreds or even thousands of other
businesses, either as customers or suppliers.