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Preface: Cloud Computing

Cloud Engineering is a multidisciplinary method which is focused on Cloud services and encompasses contributions from diverse areas such as software engineering and security engineering. The incorporation of security into engineering processes, and the application of security engineering ensure that Cloud systems have been analyzed, designed, built, tested, deployed, and developed in the most reliable, correct , robust, and secure manner. The need to investigate and propose security solutions for Cloud Computing is therefore justified in order to ensure and improve the quality and security of all services, applications, tools, and models based on Cloud computing. This requires the analysis and in-depth study of how security in software engineering can be used and managed for Cloud Computing. The development and modelling of security from the first phases of the development of Cloud systems makes is possible to obtain more robust and secure Cloud systems. The global presence of the Internet and the introduction of the wireless networking and mobile devices that always feature in Internet connectivity have raised user expectations and their demands for services from the Internet. However, the architectures required by service providers to enable Web 2.0 have created an IT service that is differentiated by its resilience, scalability, reusability, interoperability, security, and open platform development. This has effectively become the backbone of Cloud Computing and is considered by a number of vendors and services to be an operating system layer of its own (CPNI, Centre for the Protection of National Infrastructure 2010). Cloud Computing appears as both a computational model or paradigm and a distribution architecture, and its principal objective is to provide secure, quick, convenient data storage, and net computing services, with all computing resources being visualized as services and delivered via the Internet (Zhao, Liu, et al. 2009; Zhang, Zhang, et al. 2010). The Cloud enhances collaboration, agility, scaling, and availability, the ability to scale to fluctuations according to demand and accelerate development work, and provides the potential for cost reduction through optimized and efficient computing The importance of Cloud Computing is increasing, and it is receiving growing attention in the scientific community. A study by Gartner (Gartner 2011) considers Cloud Computing to be one of the top 10 most important technologies, with a better prospect in 2013 and successive years for companies and organizations.