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OPERAS as an infrastructure supporting open scholarly communication will provide a catalogue of services to the academic community. Despite their diversity, the services should follow common rules and principles to establish a common framework where they can be included and managed. The principles concern governance, sustainability and insurance. It entails to set up contractual relationships between the infrastructure and the service providers that reflects the principles mentioned earlier. Finally, there is a need to achieve a fully functional web of services that prevents gaps and overlaps regarding the users’ needs. The list and structure of OPERAS’ future services has been elaborated as a part of the infrastructure design study.