The primary function of cloud computing is to provide on-demand access to a shared pool of configurable computing resources (like servers, storage, and applications) over the internet. This model allows users to access and store data remotely rather than relying on local hardware. Cloud computing offers benefits such as scalability, flexibility, and cost-effectiveness, enabling businesses to scale resources based on demand without significant investment in physical infrastructure. Cloud services can be categorized into three main types: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS), each serving different needs.