Archive for the ‘SOA Technology’ Category

SOA Technology: SOAP, WSDL, UDDI

June 6th, 2010 by admin | 23 Comments | Filed in SOA Technology

A web service depends on three interrelated, XML-based software standards to function properly.

  • Simple Object Access Protocol (SOAP)—The message format
  • Web Services Description Language (WSDL)—The document that describes exactly what the web service does and how to invoke it
  • Universal Discovery, Description, and Integration (UDDI)—The directory of web services that are available for use

Together, the three standards combine to give a web service the ability to function, describe itself, and be found within a network. While theoretically a web service could function fully using SOAP alone, figure 1 shows how a web service needs WSDL and UDDI to be effective.

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