The goal of this poster is to contribute to a common understanding of the concept of "Open Science". Indeed, it is widely recognized nowadays that there is no single, accepted, unified definition of Open Science. This motivates our proposal of an Open Science definition as a political and legal framework where research outputs are shared and disseminated in order to be rendered visible, accessible, reusable. Our contribution is developed standing over the concepts enhanced by the Budapest Open Science Initiative (BOAI), and by the Free/Open Source Software (FOSS) and Open data movements. We have elaborated this definition proposal through a detailed analysis of some selected EC policies and laws as well as of the function of research evaluation practices. The legal aspects considered in our examination include, in particular, the study of the role of licenses in the context of the dissemination of research outputs. This poster summarizes the content of our recent paper entitled: "Towards an Open Science definition as a political and legal framework: on the sharing and dissemination of research outputs" Teresa Gomez-Diaz, Tomas Recio, Version 2 published on POLIS N. 19, 2020, https://uet.edu.al/polis/wp-content/uploads/2022/01/polis-19.pdf, and Version 3 dated 28/02/2021 with minor corrections is available on Zenodo, https://zenodo.org/record/4577066 This poster has been presented at the EGI conference 2021, see https://indico.egi.eu/event/5464/contributions/15729/.

This work is partially funded by the CNRS-IEA PREOSI project (2021-22).