As communications protocols and message formats are standardized in the web and B2B community, it becomes increasingly important to be able to allow businesses to be able to locate services available for use and to be able to describe the communications of the services in some structured way. UDDI and WSDL, two relatively new specifications in the web services arena, are designed to faciliate businesses locating and using B2B services in a standard, portable mechanism. UDDI and WSDL are going to be critical in the evolution of web services and the role they play along with SOAP, ebXML and other specifications will be increasingly visible in the very near future. This presentation presents a detailed overview of UDDI and WSDL, their specifications, and their intended use. This presentation presents a summary of available tools for working with these technologies and a summary of how an implementation might look. This seminar is targeted towards any individual that participates in development or design of a B2B service including architects, developers, project managers, and corporate executives.