According to one example of the present invention, there is provided a system for providing a service. The service is accessible from a client application and is provided through a service application using a set of service provider resources. The system comprises a mapping module for generating mapping data, the mapping data being generated in part from an enterprise architecture definition, in part from a vocabulary definition; and in part from a client context definition. The system additionally comprises a communication module for receiving a communication request, transforming the communication request using the generated mapping data, and processing the transformed communication request.