The RI-PATHS team has developed a working note on a functional taxonomy of research infrastructures (RIs) that will form a basis for the development of the impact assessment model. The working note, available here, proposes a classification that distinguishes between RIs that carry out research (basic, use-inspired and applied research) and those that deliver research-oriented services. Such a taxonomy can be applied to explain the various ways in which an investment in or funding of RIs generates and contributes to socio-economic outcomes. In line with the RI-PATHS aim to develop an operational IA model, the taxonomy will be tested on real cases before final validation. If you wish to provide any feedback, please contact us at [email protected].