Models of Cloud Computing

Infrastructure as a service (IaaS) 

IaaS gives users access to storage, networking, servers and other computing resources via the cloud. The user is responsible for managing all applications, it gives user control over their applications. 

Platform as a service (PaaS) 

A service provider offers cloud-based access for developing, managing, and delivering applications; including storage, computing resources, and prebuilt tools for customizing and testing applications. 

Software as a service (SaaS) 

A service provider delivers software and applications through the internet. Users do not install applications on their local devices. Instead, the applications reside on a remote cloud network accessed through the web.