DuneFront will demonstrate blue-grey coastal and marine infrastructure as a new generation of sustainable, inclusive, and aesthetic solution to ensure coastal safety under climate change.  The project has the ambition to co-create hybrid Dune-Dike Nature Based Solutions (DD-hybrid NbS) that can efficiently integrate static hard infrastructure with adaptive, dynamic aeolian and vegetated sediments. Mainstreaming biodiversity into marine and coastal DD-hybrid NbS is essential to jointly safeguard human assets, blue economy activities and biodiversity gain and restoration. DuneFront will achieve this challenge by identifying key biological, physical, and socio-economic boundary conditions, and by translating evidence on biodiversity, morphodynamics and safety from 12 Demonstrators along vulnerable European coasts into new roadmaps for DD-hybrid NbS design and installation. The integration of this multidisciplinary knowledge into physical and digital twins will pilot the development of a Decision-Support-System, coastal and marine infrastructure Blueprints, and the installation of new prototypes along one of the most recreated coasts. DuneFront will provide a wide range of stakeholders with design, installation and market-ripe business plans for DD-hybrid NbS. Translation of new research and innovations into the DuneFront targeted actions will occur within a full co-creation-procedure.