The "electronic components district" of Guangzhou, where numerous shops sell electronic components to other companies that would use them to manufacture consumer goods. Business-to-business (B2B) describes commerce transactions between businesses, such as between a manufacturer and a wholesaler, or between a wholesaler and a retailer. Contrasting terms are business-to-consumer (B2C) and business-to-government (B2G).
The volume of B2B (Business-to-Business) transactions is much higher than the volume of B2C transactions.  The primary reason for this is that in a typical supply chain there will be many B2B transactions involving sub components or raw materials, and only one B2C transaction, specifically sale of the finished product to the end customer. For example, an automobile manufacturer makes several B2B transactions such as buying tires, glass for windscreens, and rubber hoses for its vehicles. The final transaction, a finished vehicle sold to the consumer, is a single (B2C) transaction.
B2B is also used in the context of communication and collaboration. Many businesses are now using social media to connect with their consumers (B2C); however, they are now using similar tools within the business so employees can connect with one another. When communication is taking place amongst employees, this can be referred to as "B2B" communication.
The term was originally coined to describe the electronic communications between businesses or enterprises in order to distinguish it from the communications between businesses and consumers ("business-to-consumer"). It eventually came to be used in marketing as well, initially describing only industrial or capital goods marketing. Today it is widely used to describe all products and services used by enterprises. Many professional institutions and the trade publications focus much more on B2C than B2B, although most sales and marketing personnel are in the B2B sector.
- Center for E-Commerce Infrastructure Development
- E-Business XML (ebXML)
- Electronic Commerce
- Electronic Data Interchange (EDI)
- Empty Vessel
- Online shopping
- Private Electronic Market
- UN/CEFACT's Modeling Methodology (UMM)
- NICC B2B
- B2B e-Marketplace
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