Running Head: Cloud Computing Cloud Computing 4 Information Security Introduction 1 Overview of Cloud computing 1 Characteristics of using Cloud Computing 2 Applications 2 Challenges 3 Literature Review 4 Summary 5 Conclusion 5 References 7 Introduction Cloud computing is a computing paradigm which allow users to store the information and access the data anytime. Cloud computing serve various services at lower cost, better performance, high reliability, globally scalable and better productivity.