Which of the following is most refined and restrictive service model ?(1 Point)IaaSAll of the aboveSaaSPaaS

The most refined and restrictive service model is SaaS (Software as a Service).

Here's why:

1. IaaS (Infrastructure as a Service): This is the least restrictive service model. It provides users with the most basic level of service, typically access to networking features, virtual machines, and data storage.

2. PaaS (Platform as a Service): This is more restrictive than IaaS. It provides a platform for customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.

3. SaaS (Software as a Service): This is the most restrictive and refined service model. It provides users with a completed product that is run and managed by the service provider. In a SaaS model, service providers manage all aspects of the application, including the infrastructure, platforms, and software. The user does not have to worry about anything other than using the software.