EHDEN, which stands for the European Health Data and Evidence Network, was created as a public-private partnership under the framework of the IMI. EHDEN aspires to be a trusted observational research ecosystem that enables better health decisions, outcomes and care for patients across Europe. To achieve this, EHDEN is creating a large-scale, federated network of harmonised data sources standardised to a common data model. Website: www.ehden.eu Twitter: @IMI_EHDEN Github: www.github.com/EHDEN