Introduction

WSDL is a simple standard for describing webservices. It provides functionality similar to an API.
If we hope to have agent compose just-in-time services from individual components, we will need more semantically-rich descriptions of services.
That is, an agent needs to have some understanding of what getStockQuote (string symbol) does.
OWL-Services is a set of ontologies, written in OWL, which can be used to describe (at a higher/more detailed semantic level) what a service does.
Previously known as DAML-S.