This talk discusses model-driven engineering of services. It considers
principles of services in telecommunication, business IT, Internet,
and sofware development. The specific nature of services such as the
uncertainty of their usage in an open world, their dynamics along
loose coupling and late binding principles, or their service
requirements put forward in contracts requires a dedicated engineering
approach for services and specific quality assurance methods. First
approaches in service modelling use local and global views on services
and/or consider their collaborations. As services are always-on,
highly dynamic, contract-based and service-quality oriented, new
methods for service testing are needed as well. These include online
tests, build-in tests and run-time auditors and supervisors.

Software service engineering has to address semantic service
specifications, which are not just structural interfaces; should
provide 'clean' and 'handy' service modeling methods provided by both
general-purpose and domain-specific languages; and should offer sound
quality assurance methods for service-based systems, in particular
testing. Overall, model-driven engineerng (MDE) and software service
engineering (SSE) can benefit from each other and should be combined.