Launched Jan. 1st 2015, as a follow up of OpenAIRE and OpenAIREplus, OpenAIRE2020 is the European Commission initiative for an Open Access Infrastructure for Research in Europe which supports open scholarly communication and open science, and access to the research output of European funded projects. The European Commission implemented an open science policy in her funders programme Horizon2020. This policy includes an open access to publications mandate and an (open) research data policy. OpenAIRE supports projects and researchers in complying to this policy. Furthermore, OpenAIRE's infrastructure supports open science activities in Europe as a whole. The substantial infrastructure operates on two levels: Gathering research outputs: OpenAIRE gathers open access content from a network of repositories around Europe. To put this into practice, an integrated suite of guidelines has been developed so that data sources, namely literature and data repositories, OA publishers and CRIS systems can be harvested and their contents made more visible. These guidelines are also adopted by other networks like the LA Referencia network in Latin America, which makes interoperability on a larger, global, scale possible. The portal gives access to both open access publications and EU-funded scientific publications, registered in the more than 600 participating data providers. Also doctoral theses are an important part of the OpenAIRE portal open access content. This massive collection enables OpenAIRE to enrich the data set as a whole and provide services such as monitoring tools for depositing, usage statistics and interchanging enriched data. Policy harmonisation and community outreach: OpenAIRE has a collaborative and thriving 'human' network, which is pan-European in nature.