Open science aims to make scientific research, data, and dissemination accessible to all levels of society. There are several ways to achieve open access, including self-archiving research in open repositories ("green open access") or publishing in open access journals that make articles freely available online ("gold open access"). OpenAIRE is a partnership that supports the transition to open science by linking research outputs like publications and data across repositories and providing services, guidelines, and analytics to key stakeholders like researchers, libraries, funders, and research administrators.