120 delegates gathered in University of Minho (Braga, Portugal) last week (February 7/8) to attend a workshop on Interoperability. The purpose of the workshop was to showcase the new set of OpenAIRE guidelines and to discuss and get input onto OpenAIRE’s approach to harvesting metadata. This was in addition to the wider aim of discussion the challenging issue of interoperability within the open access world and repositories. We invited therefore representatives of a range of communities to present on how they see themselves fitting into the knowledge landscape: CRIS, DataCite, publishers, data repositories, EUDAT, research infrastructures, and ultimately, from an OpenAIRE point of view, how we can potentially work together with them.