Corporate training services have grown into a key approach for improving performance and a substantial industry in recent years due to increased job requirements, workforce flexibility and lifelong learning. Transfer-of-training is a key output of these services, defined as the application and generalization of new competences at work acquired in training. Corporate trainings are exemplars of highly co-created services. Improving the output productivity through better transfer-of-training requires collaboration between providers and customers. IT could be an enabler to embed transfer-related activities for transferring training contents to the work. However, IT support is missing for improving transfer-of-training in corporate trainings. Inspired by service logic and based on training research, this paper employs a theory-driven and iterative design approach to develop transfer-supporting IT components for corporate trainings. Furthermore, we present the implemented prototype, findings from several design interactions and report on the on-going summative evaluation in an international service management training.