Payment annotations for Web Service Description Language (PA-WSDL)

Abstract

Nowadays the use of Web Services is based on two approaches. The first approach is the use of web services freely and the second one is a restricted use of services based on payment, subscription or any other method based on a commercial agreement. However, for this last approach, the information related to the payment, and therefore needed to use the service, is not provided along with the description of the service. This fact limits the discovery of web services in automated- way because this information is usually provided in web pages. In this paper, we describe how to include payment information in Web Services Description Language (WSDL), WS-Policy and Universal Description, Discovery and Integration (UDDI) for those services that require a payment. © 2008 Springer-Verlag Berlin Heidelberg.