Common Understanding Wiki
A Common Knowledge Source of Terms and Definitions
The Web Services Description Language describes web services and how to access them. WSDL descriptions are written in XML.
The Web Application Description Language is designed to provide a machine processable description HTTP-based Web applications.
The XML-based Simple Object Access protocol offers the capabilites for exchanging structured information between web services.
The XML-based Universal Description, Discovery and Integration specification defines a universal method for enterprises to dynamically discover and invoke Web services
The Representational State Transfer an architecture style for designing networked applications in a simpler way than common standards like for example SOAP.