Computation technologies and computer tools offer varied resources for the implementation of applications of electronic commerce (e-commerce). The current organizational models are based on nets of associations that are integrated to achieve business objectives. Therefore, the effectiveness of the commercial operation doesn't only depend on an appropriate configuration of technologies but also on efficiency in the business services. Service-Oriented Architecture (SOA) is an architectural style for distributed computation that considers the creation and administration of business services. With Web Services the services can be published in the Web and accessed by applications independently from language and technology. In this work a workflow support for the modeling and simulation of applications of e-commerce based on services and technologies Web Services is proposed. Tools are applied of processes modeling, with their integration in TIBCO that result in the modeling of a process business to consumer (b-to-c), their simulation and the evaluation of metrics of performanceI Workshop Innovación en Sistemas de Software (WISS)Red de Universidades con Carreras en Informática (RedUNCI
