Cloud Computing refers to the delivery of computing services over the internet, enabling users to access and utilize resources such as servers, storage, databases, networking, software, and analytics on demand. This technology allows for greater flexibility and scalability, as users can adjust their resource usage based on current needs without the requirement for extensive hardware investments or maintenance. Cloud computing is categorized into different service models, including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). The primary advantages of cloud computing include cost efficiency, speed, performance, security, and the ability to collaborate and share information seamlessly from anywhere with internet access.