Cloud computing has expanded the victory of recognition since its commencement in the IT industry and academic sectors. The business has been already shifted to the cloud as it fascinates the people, industry and community because of its marvelous benefits from its shared resources (Ali, Khan and Vasilakos, 2015). The flexible cost, fresh software and elastic capacity makes more feasible for its use with less environmental impacts. It also has helped to collaborate with the diverse people by sharing the information in real time interval through virtual meeting. According to Cloud Security Alliance a part of the IT budget is spent on the different cloud services by 86% of the companies and 33% of them are proceeding with the utmost speed (Adamuthe et. al, 2015).
The figure 1 below explains about the investment that the cloud computing covers in the market by segment where it rises from 2010 to 2016.
Figure 1: Public Cloud Service by Segment, 2010-2016 (Gartner, 2013)
National Institute of Standards and Technology (NIST, 2011) has defined the cloud computing as a representation that empowers the globally suitable access of network services that can be shared through the nominal management practice. The basic three service model emphasizes the consumer to apply the various functions that are running in the cloud infrastructures. Besides these, cloud services concern with different challenges regarding the security issues (Mell and Grance, 2011). The risk associated with the operation, management and real practice has been determined in the cloud computing technology. The survey done by the IDCI has declared that 74% of the IT experts mentioned that the cloud service is bounded by the higher security challenge and should be addressed to the privacy because of disloyal management of data and services (Subashini and Kavitha, 2010).