Web Services Definition

Software systems that support interoperable network interactions

• Web service interface described in WSDL (Web Services Description Language)
• Other systems interact with Web services using SOAP (Simple Object Access Protocol) messages
• Data is exchanged using XML format
• Messages are sent using HTTP, SMTP

WSDL - Platform and Language independent XML description of Web service
UDDI - Universal Description, Discovery, and Integration - Registry of organizations and their Web services