The Web Services Hub is the web service gateway in the PowerCenter domain that allows client applications access to PowerCenter functionality using web service standards and protocols. With the Web Services Hub, you can enable PowerCenter workflows as web services. You can also monitor PowerCenter processes and get repository information.
The Web Services Hub allows the data integration processes to remain within the PowerCenter framework, but handles requests and responses using web service technologies. The Web Services Hub receives requests from web service clients in the form of SOAP messages and passes them to the Integration Service. The Integration Service works with the Repository Service to process the requests and sends the results to the Web Services Hub. The Web Services Hub sends a response back to the web service client in the form of SOAP messages.
The Web Services Hub provides a Web Services Hub Console where you can manage web services and view and download the WSDL files for the web services. You can use the WSDL files to create client applications to access the web services.
The PowerCenter installation includes the Web Services Hub. After you install PowerCenter, use Informatica Administrator to create a Web Services Hub and enable it as you would other application services in the domain.