The European Open Science Cloud (EOSC) aims to integrate fragmented data sets into a unified platform by 2020, providing 1.7 million EU researchers with free access to data storage and analysis services. Key challenges include standardization for data interoperability and adequate hardware capacity, while governance and public engagement are crucial for sustainability. The initiative emphasizes stimulating demand for open research data, fostering cooperation among EU member states, and creating an action plan for scientific data interoperability.