What are the three main service models in cloud computing?

The three main service models in cloud computing are 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 IT infrastructure such as servers, storage, and networking on a pay-as-you-go basis. This model offers maximum flexibility and control, making it ideal for businesses that want to manage their own applications and data while avoiding the costs and complexities of physical hardware.

PaaS supplies a platform allowing customers to develop, run, and manage applications without dealing with the complexity of building and maintaining the underlying infrastructure. It includes services like application hosting, development tools, and database management, making it a popular choice for developers looking to streamline the app development process.

SaaS delivers software applications over the internet on a subscription basis. It removes the need for installation and maintenance, as users can access the applications from any device with an internet connection. This model is convenient for end-users and businesses as it ensures that everyone is using the most up-to-date version of the software.

The other combinations of terms presented do not encompass the primary cloud service models recognized widely in the industry. While they include some valid