B2B:
B2B is short for 'Business to Business' and is used to designate those aspects of e-commerce that involve the exchange of goods of services between companies over the Internet. B2C (Business to Consumer), on the other hand, refers to Internet sales by businesses to consumers. B2B platforms encompass not only commodity exchanges and wholesale supplies on the Internet but virtual auctions as well.
From: www.x-solutions.poet.com/eu/newsevents/glossar