The BigDataStack project was conceived as a data centric environment, integrating approaches for Data as a Service. The data services of the environment are covered in this deliverable in terms of design specification as well as in terms of integration and experimentation outcomes (i.e. prototypes evaluations) and are naturally at the core of BigDataStack. A full demonstration of the capabilities offered by the data services has been performed during the interim review of the project, in which all the components have been integrated and interacted to demonstrate their added-value and innovations in the scope of the real-time ship management use case.