The ESFRI infrastructures in Biological and BioMedical Sciences face substantial challenges in accessing and sharing data and resources. The BioMedBridges consortium brings together the six established ESFRI infrastructures with common goals to define, implement and deliver data interoperability across the biological and biomedical domains.The first objective is to ensure that interoperable standards are available across all data resources and services shared by two of more ESFRI infrastructure. The identified standards will be implemented to enable data interoperation between ESFRI projects in biomedical sciences.Public data in life sciences will be freely accessible through these standard interoperable services. Private data, however, is a major concern in this domain, for medical information or for data with intellectual property issues. Where projects need to share sensitive data, standards for secure and restricted access will be identified and implemented.BioMedBridges is a practical solution to the data interoperability requirements of infrastructures in the biological and biomedical domains. A suite of use cases will guide the development and deployment of standards and services with emphasis on the issues arising between specific projects. These may cover the exchange of biomedical and genetic data, linking mouse model organism data with human clinical information, and the deposition of large volumes of data from one project to another.BioMedBridges is inclusive of emerging infrastructures which can contribute additional data classes and challenges such as bioimaging, ecosystems, small molecules and infectious diseases.The ESFRI infrastructures leading BioMedBridges are ELIXIR, BBMRI, EATRIS, ECRIN, InfraFrontier and INSTRUCT.