Cloud computing challenges and opportunities: A survey

The approval rating of cloud computing as an emerging technology has been enhanced significantly and these days, there are many cloud storage and computing providers who offer their services regarding IaaS, PaaS, and SaaS. Despite these considerable benefits, there are serious concerns and challenges about this new technology. The most important issue is related to security and privacy subjects in cloud-based environments. Furthermore, resource allocation, load balancing, data management, data availability, scalability, compatibility and interoperability are the other challenges in cloud-based environments that decrease efficiency and reliability of this technology. In this paper, challenges and concerns related to cloud-based environments have been identified and most appropriate current solutions for each challenge have been described.