Scalability is one of the key evaluation criteria for the computing processing capacity of software systems. High scalability represents a kind of elasticity, which can guarantee high throughput, low delay and high performance in the process of the system extension. Additionally, with the need to process the rapid increase amount of information, new architectures, software, algorithms, and tools to improve scalability are required. The 2015 IEEE International Conference on Scalable Computing and Communications (ScalCom 2015) will provide a high-profile, leading-edge forum for researchers, engineers, and practitioners to present state-of-art advances and innovations in theoretical foundations, systems, infrastructure, tools, testbeds, and applications for the scalable computing and communications, as well as to identify emerging research topics and define the future. The ScalCom2015 is the next edition of the successful series, previously held as ScalCom-2014 (Ayodya Resort, Bali, Indonesia), ScalCom-2013 (Chengdu, China), ScalCom-2012 (Changzhou, China), ScalCom-2011(Pafos, Cyprus), ScalCom-2010 (Bradford, UK), ScalCom-2009 (Dalian, China).