Abstract. Model-based testing (MBT) seems to be technically superior to conventional test automation. However, MBT features some difficulties that can hamper its deployment in industrial contexts. We are developing a domain-specific MBT solution for graphical user interface (GUI) testing of Symbian S60 smartphone applications. We believe that such a tailor-made solution can be easier to deploy than ones that are more generic. In this paper, we present a service concept and an associated web interface that hide the inherent complexity of the test generation algorithms and large test models. The interface enables an easy-to-use MBT service based on the well-known keyword concept. With this solution, a better separation of concerns can be obtained between the test modeling tasks that often require special expertise, and test execution that can be performed by testers. We believe that this can significantly speed up the industrial transfer of model-based testing technologies, at least in t...