There are different types of cloud computing models, primarily categorized into three main types: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). IaaS provides virtualized computing resources over the internet, allowing users to rent hardware and storage. PaaS offers a platform for developers to build, deploy, and manage applications without dealing with underlying infrastructure. SaaS delivers software applications over the internet, accessible through web browsers, simplifying user access and eliminating the need for installation.