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Realizing the Web's full potential will require the development and support of agents that function as schedulers, planners, and searchers who, with minimal direction, can serve as an omnipresent staff of advisers, secretaries, brokers, and research assistants. Electronic commerce has brought this capability tantalizingly near. Organizations and individuals have connected an enormous variety of products and services to the Internet, making them accessible to other programs through simple communication protocols. Now the AI community must determine how it can build intelligent agents to exploit these services. One strategy would change the Web itself, making it accessible to existing AI modeling, and reasoning techniques. In this semantic Web, service and content providers would mark pages in accordance with standardized conventions designed to reduce ambiguity and make automated reasoning easier. The paper considers the development of a distributed intelligence and bringing agents to the Web. It discusses DAML-S which provides support for composite services, combinations of simpler services, or behaviors, and the coordination mechanisms, or reactive plans, used to combine those behaviors.