The last statement (PDF) of the WS-I (Web Services Interoperability Organization), according to the Panel reached its own targets and triggers are essential. The developed standards that different Web services to ensure the cooperation to be in the custody of OASIS passed. The WS-I focuses on the first generation of Web services, XML documents used. She developed no standards, but methods and tools for interoperability testing. Among its last 39 members including IBM, Microsoft, Oracle, SAP, and Computer Associates.

In a blog entry describes Sun's former Open-source guru Simon Phipps, the emergence of XML Web services start of the decade: After his impression would have large IT companies, therefore, fell on the technology, as an analyst anywhere on the particular "Web Services "asked strategy. When the competition web services, had they had even want to have that also. With the "Web" but would these services, he concluded Phipps, hardly something to be done - they had been too unwieldy, almost a port of CORBA on the Internet. Meanwhile, they are positioned above the REST on HTTP services largely replaced. XML Web services played almost exclusively on intranets a role.