What are the main services provided in a cloud computing environment such as AWS?

"There are three main services provided in a cloud computing environment. These are Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Infrastructure as a service refers to the environment managed by the cloud service provider. This includes the building, power, cooling, and management services. Platform as a service refers to the computing hardware. This may be dedicated to the client or shared by several clients. Software as a service is the applications, operating systems, and tools provided by the cloud service provider or a third party. Clients rent these rather than purchase them. A service provider like AWS is very experienced at offering these services and assisting their clients to select and configure the services best suited to their needs."