Abstract. The Web is being consolidating as the main platform for the development of applications. Moreover, these applications are not conceived just as isolated systems. This fact implies that the requirements that Web applications should satisfy are now more challenging than before. One important requirement for these systems is to provide support for the execution of business goals expressed by means of Business Process definitions. From the Web Engineering area, several methods have provided a solution to cope with this requirement. In this work we present, within the context of the OOWS Web Engineering method, how business process definitions are transformed into executable process definitions by the application of model-to-model transformations. To accomplish this goal, this work has been developed in the context of the Eclipse environment jointly with the BABEL project.