A significant challenge in business process automation involves bridging the gap between business process representations and Web service technologies that implement business activities. We are interested in business process representations such as Business Process Modeling Notation (BPMN) and Event-Driven Process Chains (EPCs). Web service technologies include protocols such as Simple Object Access Protocol (SOAP), architectures such as REpresentational State Transfer (RESTful), or semantic description languages and formalisms such as Web Ontology Language for Services (OWL-S) and Web Service Modeling Ontology (WSMO). This paper reviews previous work on the integration of business process representations and Web service technologies. It provides a perspective on the field by summarizing, organizing, and classifying the proposed approaches. Consequently, this study has identified opportunities for future research in the field, including the need for a generic transformation approach among arbitrary models, the need to represent mappings in a formalized way, and the necessity of a common execution framework.