DS2 brings together experts from various fields across Europe to ensure smooth and secure data sharing, aggregation and tracking, while respecting data owners’ rights and adhering to European data regulations. Our modular software infrastructure connects different data sources, facilitating efficient cross-sector data sharing with ease. Using the Intersector Data Space Toolkit (IDT), DS2 enables seamless communication between data sources. The IDT Toolkit consists of a Broker for fail-safe network operation and various modules for executing complex data lifecycles, including filtering and labelling, with options for both automated and human-in-the-loop processes. DS2 will be co-created and trialled via 3 use cases – City Scape, Green Deal, and Precision Agriculture – to demonstrate its effectiveness across sectors.