The business model concept is useful in analyzing and communicating the essence of a business, and for predicting the implications of electronic commerce on an existing business. As useful as the concept is, there is a lack of consensus among researchers on the definition of a business model, and on the constructs of the business model. The aim of this paper is to propose a conceptual framework for business model research that provides a basis for theory development and debate. Without such a conceptual framework business model research will progress in an ad hoc fashion and be directed by the immediate needs of individual researchers.