Business-to-Business, or B2B, is a model that companies use for conducting their businesses in such a way that they create products and services for other businesses, organisations, and charities. The primary part of business includes exchange of goods and services and contract with other other businesses for raw materials needed to create and manufacture a product. These businesses form an important part of the supply chain. In the B2B model, consumers are not a direct factor in transactions and are not involved in this stage of business activities.