Doina Cristina Duma (Female) is the leader of the Distributed Systems group at the INFN National Center (CNAF), providing the core operational support for the INFN-wide Grid infrastructure and for the CNAF Cloud infrastructure. The task of her group is also to investigate how to evolve the existing infrastructures to pursue increased resource efficiency in view of the progress in the underlying technologies. She has a long experience in managing distributed e-infrastructures, being involved since 2003 in major European projects such as DataGrid, EGEE (I, II, III), EGI-Inspire and EGI-Engage. At national level she worked for the Italian Grid Infrastructure (IGI) and for the Open City Platform (OCP) project, funded by the Italian Ministry of Education and Research in the “Cloud computing technologies” section, where she chairs the IaaS area. She worked for several bioinformatics projects (BioinfoGRID, LIBI) gaining experience in supporting users from different scientific communities. She was also the Release Manager of the EMI (European Middleware Initiative) project and Deputy of the Software Maintenance and Support Work Package leader, having as main responsibilities to manage all release activities, including release planning, building, deploying, reporting, establishing and maintaining the overall release timeline and milestones. She is now the leader of the WP3.2 – “Software Maintenance and Release” of the INDIGO- DataCloud European project, addressing the challenge of developing open source software, deployable in the form of a data/computing platform, aimed to scientific communities and designed to be deployed on public or private Clouds, and integrated with existing resources or e-infrastructures.