DEFINITION OF CLOUD COMPUTING This essay is mainly about cloud computing, including its definition, types, history, risks, disadvantages, advantages and future impacts. Cloud computing refers to the provision of hosted services over the Internet. There are three categories of these services: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-as-a-Service (SaaS). The cloud service differs from traditional hosting in three aspects: it is sold according to the customer's needs, it can be used as much as the customer wants and it is completely managed by the provider. Customers can easily access the service with a personal computer and Internet access. There are two types of cloud computing: public and private. Public cloud services can be purchased over the Internet, while private cloud services are provided from a data center that offers hosted services only to specific people. Regardless of whether it is private or public, cloud computing aims to provide simple and scalable access to computing resources and IT services. TYPES OF CLOUD COMPUTING Infrastructure as a service (IaaS) is the foundation of cloud computing and the main layer considered. This service model offers some advantages, such as control of applications, data, operating system, middleware, and runtime. The service provider controls the virtualization of the servers, network and storage. This helps you avoid spending on hardware and human capital, reduce return on investment (ROI) risk, and simplify and automate scaling. However, a key shortcoming is occasionally the lack of additional data space for processing power. With IaaS you only pay for what you use, which can save you money. Platform-as-a-Service (PaaS) is the second layer of cloud computing. It provides a platform for developers to build and deploy applications. PaaS offers a complete development and deployment environment in the cloud, including tools for testing, collaboration, and version control. PaaS can be used to develop web applications, mobile applications, and enterprise applications. Software-as-a-Service (SaaS) is the third level of cloud computing. Provides software applications over the Internet. SaaS eliminates the need for customers to install and run software on their own computers. Instead, they can access the software through a web browser or mobile app. SaaS is used for a variety of applications, including email, customer relationship management (CRM), and enterprise resource planning (ERP). ADVANTAGES OF CLOUD COMPUTING Cloud computing offers numerous advantages. First, it provides easy access to computing resources and IT services. Secondly, it allows for scalability, meaning you can easily scale up or down your computing resources as needed. Third, it can save you money by reducing the need for hardware and human capital. Fourth, it can improve collaboration and productivity by allowing multiple users to access the same resources and applications. Finally, it can improve security by providing centralized control and monitoring of data and applications. DISADVANTAGES AND RISKS OF CLOUD COMPUTING Cloud computing also has some disadvantages and risks. First, it requires a reliable internet connection. If your internet connection is slow or