B2B (Business to Business) is the trade model between businesses aiming to sell products or services from one business to another. An example is a computer store that buys goods from a wholesaler. In this example there is a trade link between the wholesaler and the computer store. The store can supply from the wholesaler in the event that the product is exhausted, while the wholesaler can sell more than one product at a time. The advantages of this model are considered to be the reduction of costs and high productivity in intercompany e-commerce.