B2B e-commerce is simply defined as e-commerce between companies. While B2C ecommerce gets the most media attention, B2B ecommerce is the bigger revenue generator. B2B websites become more like B2C. Online B2B sellers now understand that the customer experience in a B2B environment is just as important as for B2C.
Globally, by 2020 the B2B ecommerce market will be twice as large as the B2C market — $6.7 trillion vs. $3.2 trillion — according to research provider Frost & Sullivan.
One-to-many. In a direct model, companies have their own B2B online store, where customers can purchase goods.
Many-to-many. This Model involves companies joining an extensive online B2B marketplace. This can be a private market in which companies choose to form a closed network, or a public marketplace, which is open to all suppliers in a particular market.