One of the most notable and well-known advancements in data processing and networking is cloud computing. The computing system has undergone a significant change as a result of cloud computing. It changed from hefty and expensive servers to more flexible and dynamic modern systems. This essay will cover the definition of cloud computing, its role in information technology, its advantages, its disadvantages, and its ethical and legal implications. The paper also includes a list and a brief description of the security issues with cloud computing and the solutions to those issues. The paper also discusses cloud computing deployment strategies as well as service models.