The Cloud Computing (CC) is a model which treats the resources as an integrated entity on the internet, cloud. Cloud computing is an unique environment or network in which process, access and maintenance are done by anywhere from the world. The CC is a customized internet-based web server. Data security is receiving more and more attention with the expanding usage of cloud storage systems and due to its challenging circumstances. Any cloud data storage model’s fundamental objective is to provide simple data access without compromising the security of the data. The main concerns of any cloud storage system are ensuring safety and security. Big data security and privacy have emerged as a problem that prevents the usage of cloud services by the organization. Earlier privacy-preserving methods had a number of drawbacks includes completely dependence on third parties, a lack of performance efficiency, accurate data analysis, and data privacy. This analysis presents a secure and efficient cloud storage system that uses the advanced encryption standard algorithm for data protection. The user files are encrypted with the AES (Advanced Encryption Standard) standard. The efficiency of the method that is being provided is evaluated in terms of execution, decryption, and encryption times.