EDGI's aim is to deploy desktop grid (DG) and cloud services for EGI user communities that are heavy users of DCIs and require extremely large multi-national e-infrastructure. In order to achieve this goal software components of ARC, gLite, Unicore, BOINC, XWHEP, ADICS, 3G Bridge, OpenNebula, Eucalyptus will be integrated into SG?DG?Cloud platforms for service provision and as a result EDGI will extend ARC, gLite and Unicore grids with volunteer and institutional DG systems. EDGI will create novel QoS support for the DG systems and will explore new service provision models in order to ensure harmonised DG?Cloud interfaces to ARC, gLite, Unicore resources. EDGI will provide a workflow-oriented science gateway to enable user communities to more easily access the EDGI infrastructure. EDGI will establish the EuroCivis organization to coordinate DG-related activities in Europe both for solving technical issues as well as to attract volunteer DG resource donors by disseminating results of the EDGI and EGI projects. EuroCivis and EDGI will work in strong collaboration with EGI, EMI, NorduGrid, Unicore Forum and interested NGIs.