The GÉANT4 SGA1 (Specific Grant Agreement 1) is a 12-month project beginning 1 May 2015, and ending 30 April 2016. As part of the GÉANT2020 Framework Partnership Agreement (FPA), it is funded by the European Union's Horizon2020, the Framework Programme for Research and Innovation (2014-2020). Croatia is represented by Croatian Academic and Research Network - CARNet and University Computing Centre - SRCE (as te Third Party). GÉANT4 SGA1 is the first step of a new phase in providing a stable, yet highly innovative, environment for the growth of GÉANT as the European Communications Commons for the European Research Area, providing the best possible digital infrastructure to ensure Europe remains in the forefront of research and other knowledge endeavours. Close cooperation with other European e-infrastructure providers and large scientific projects generating vast volumes of data (e.g. ESFRI projects, CERN) will ensure the unique challenges of this dynamic community are met.