Architecture of Web Services; review of XML Shemas; SOAP (Simple Object Access Protocol); WSDL (Web Services Description Language); UDDI (Universal Description, Discovery, and Integration); Web Services in .NET; Sun and Apache tools; Company-specific Web Service API?s; Java API?s for XML Messaging; Java Application Servers; review of Security, transactions, and business process languages (e.g. BPEL) among Web Services.