Abstract: Cloud computing is an innovative computing paradigm that offers amazing advantages in economical aspects such as reducing time, improved performance, flexible computing capabilities, and advantageous computing power. But the security of the data in cloud is under risk. We can explore the cloud computing for so many applications as an individual or as a group work. This paper gives the basics of cloud computing with its history, architecture, features along with pros and cons. The paper also gives two ideas for secure data storage in cloud environment. It helps to store data without confidentiality leakage and also helps to retrieve only accurate files.

Keywords: Cloud Computing, Security, Storage, User data.