E-procurement is the business-to- business purchase and sale of supplies and services over the Internet. An important part of many B2B sites, e-procurement is also sometimes referred to by other terms, such as supplier exchange.

Typically,e-procurement Web sites allow qualified and registered users to look for buyers or sellers of goods and services. Depending on the approach, buyers or sellers may specify prices or invite bids.

Transactions can be initiated and completed.Ongoing purchases may qualify customers for volume discounts or special offer.