What Are XML Web Services?XML Web Service ExamplesInformation ServicesCentralization ServicesData Integration, Aggregation, and AnalysisExtending and Integrating ApplicationsPeer-Based and Push-Based SystemsThe Benefits of XML Web ServicesStandards BasedVendor NeutralSimplicityLanguage and Platform IndependenceFunctional AbstractionDiscoverableReduced Development TimeChallenges Facing XML Web ServicesImmature TechnologyConsumer AdoptionUnproven Business ModelManaging ComplexityMaintaining ConsistencyOperational Issues and Support InfrastructureXML Web Services Standards and ProtocolsDirectory and DiscoveryUDDIDISCODescriptionWSDLMessagingSOAPThe Extensible Markup LanguageTransportXML Web Service ArchitectureDirectory, Discovery, and DescriptionProxy ObjectsCreating XML Web Services with ASP.NETSummary