We have a great pleasure to invite you to participate in The 20th International Conference on Control Systems and Computer Science (CSCS20-2015) to be held in Bucharest, Romania, from May 27 to May 29, 2015. The CSCS20 Conference continues a tradition of more than 40 years as a biennial international event. The main scope of CSCS is to cluster the latest research topics relevant to both Computer Science and Control Systems, and to promote cutting edge research significant to main stream topics of these two interconnected domains. The 2015 edition of CSCS topics will be mainly focused on Intelligent Information Technologies, as a common thread which leads advances in fundamental and applied research in Control Systems and Computer Science. The major goal of the conference is to explore new directions and approaches for reasoning about Control Systems and Computer Science, and to encourage the submission of ongoing work, as well as position papers and case studies of existing projects. Also, the conference offers a forum for both academics and practitioners to share their experience and identify new and emerging trends.