UDDI was a nice sounding idea
see this wikipedia article for discussion that never took off. I understand it gets used inside corporate private systems.
Instead, people publish text descriptions of a service and a public WSDL file. Various toolkits can read a WSDL file and create
SOAP client software components.
The vision of lots of public SOAP services never took off either because a RESTful style service is so much easier - thats why AMAZON and
Google dropped their SOAP interfaces for REST.
Bill