The document provides an overview of how OpenAIRE can help with the Horizon2020 Open Access mandate regarding publications and research data. OpenAIRE operates a support network across Europe to assist with open access training, policy development, technical assistance, and more. It also maintains an integrated scientific information system that aggregates metadata from repositories, publications, datasets, and more. The document discusses OpenAIRE's infrastructure and services, the current state of open access for FP7 and H2020 projects, and provides guidance on open access requirements and best practices for publications and research data under Horizon2020.