I3 Instrument Support Facility provides support to regional and national innovation stakeholders and public authorities, fostering strong interregional innovation ecosystems and reinforcing the objectives of the Interregional Innovation Investments (I3) Instrument. With a special focus on less developed regions, EU outermost regions, and regions facing specific challenges, the I3 Support Facility aims to: Connect regional ecosystems within shared Smart Specialisation areas. Promote interregional innovation ecosystems. Enhance interregional innovation capacity. Foster engagement in European value chains and joint investment projects.