Answer:
Step-by-step explanation:
The cloud model that delivers all services, including the application, is SaaS (Software-as-a-Service). In the SaaS model, the service provider hosts and delivers software applications over the internet to the end-users. The service provider manages the infrastructure, platform, and application software, and the users access the software via a web browser or thin client.
In the IaaS (Infrastructure-as-a-Service) model, the service provider offers virtualized computing resources, such as servers, storage, and networking, to the users who manage the operating system, middleware, and application software.
In the PaaS (Platform-as-a-Service) model, the service provider provides a platform that includes the operating system, middleware, and runtime environment for developing, testing, and deploying applications.
In the DaaS (Desktop-as-a-Service) model, the service provider hosts and delivers desktop operating systems, applications, and data to the end-users over the internet. The users access the desktop environment via a thin client or a web browser.