The document discusses Big Data Europe (BDE), a coordination and support action to address challenges around big data in Europe. It outlines two main measures BDE will implement: 1) Coordination of stakeholder engagement to understand requirements for big data infrastructure across societal challenges, and 2) Support for designing, developing, and evaluating a big data aggregator platform to meet requirements and maximize opportunities from European research. BDE will build interest groups and involve stakeholders from Horizon 2020 challenges to coordinate this work, and design a cloud-ready aggregator platform to realize the described measures.