XML has started a revolution on the web: from static formatted content to dynamic self-defining information with real semantics. The addition of semantics is only the first step to providing real applications, known as “web services,” to internet users. The first generation of web-service infrastructure is in development, allowing one web service to issue a request to another and to register/describe/find a service to use (e.g., SOAP, WSDL, UDDI). Eventually, web services will become electronic utilities that are delivered to end users over the internet, representing a critical new application domain in electronic commerce. Like traditional utilities, such as electricity, web services will be metered and customers will pay for their use. The terms of use (called service level agreements or SLAs) of the services will include functionality, performance, and reliability. The need to dynamically monitor and control SLAs and to respond to changing needs and resources, imposes challenging requirements on the design, development, deployment, and evolution of web services. This workshop explore issues in, and new technologies and methodologies to support the engineering and deployment of, web services. URL: http://www.research.ibm.com/people/b/bth/OOWS2001.html Tracks: Emerging Technologies; Internet Technologies; Middleware

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