OASIS Semantic Execution Environment (SEE) Technical Committee develops a reference architecture for semantically enabled SOA technologies. The aim is to provide a harmonized and extensible software architecture for building SOA systems that employ semantic techniques for semi-automated discovery, selection, composition, mediation, and execution of Web services. The results of the TC are:

• Semantic Web Services Architecture and Information Model (Specification)
• Execution Semantics for Semantics-Enabled Systems (Specification)
• Technical Reports and White Papers

The SWS interest group has served as the discussion and coordination forum for the integration of semantic technologies into the W3C Web Service activity. Apart from initaiting the SAWSDL working group, the following works have been published as W3C member subsmissions:

• OWL Web Ontology Language for Services (OWL-S)
• Web Service Modeling Ontology (WSMO)
• Semantic Web Services Framework (SWSF)
• Web Service Semantics - WSDL-S

The Rule Interchange Format (RIF) Working Group works towards W3C Recommendations for Semantic Web rule languages that allow the interchange of rule definitions among various logical formalisms. The finalization of the work is planned for summer of 2009.

Semantic Annotations for WSDL and XML Schema is a W3C Recommendation for amending the WSDL-descriptions of Web Services. It is based on the concept of model references: the meaning of a WSDL element is explicitly defined in additional tags that refer to an semantic specification, e.g. to an external ontology. The Recommendation has been published in August 2007.