The 5th International Conference on Computer Science and its Applications (CIIA’2015) will be held from 20-21 may 2015 in Saida, Algeria as for the previous editions. The main objective of this conference is to provide a forum for the dissemination of research accomplishments and to promote the interaction and collaboration between different research communities related to computer science and its applications. CIIA’2015 will also provide an international platform for the presentation of research on Software Engineering, Distributed System, Computational Intelligence, Advanced Information Systems, Advanced Infrastructure design (distributed, parallel, cloud, grid computing, etc.), and technologies that can be developed in Algeria and Africa such as scalable and sustainable supply and distribution of energy, etc. This international scientific event initiated by researchers from Algeria and extended to cover worldwide researchers aims at promoting the research in Africa, creating scientific networks, developing projects and facilitating faculty/student exchanges.