Web services—a term with considerable scope—can involve many technologies, such as XML, WSDL, SOAP, JSON, and Ajax. But the core concept is simple: Web services are about servers sharing information with other servers. To be a web service consumer, your server initiates a call to another server: the provider. The provider returns a response based on the consumer request. The primary benefit of using web services is that they let you share and accumulate information from ...

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