Which service model allows a user to fully manage their applications on a cloud infrastructure?

The service model that allows a user to fully manage their applications on a cloud infrastructure is Infrastructure as a Service (IaaS). IaaS provides users with virtualized computing resources over the internet. This model offers a high level of control, giving users the ability to deploy and manage their applications while also taking care of the underlying infrastructure, including storage, networking, and servers.

With IaaS, users can install any software they need, including operating systems and applications, allowing for complete customization of their environment. They can also scale resources up or down based on demand, making it a flexible solution for businesses with varying workloads.

In contrast, the other service models limit the level of control users have. Software as a Service (SaaS) provides ready-to-use applications managed by the service provider, without user control over the underlying infrastructure. Platform as a Service (PaaS) offers an environment that allows users to develop, test, and deploy applications without managing the underlying cloud infrastructure but still doesn't provide the full management capabilities that IaaS does. Desktop as a Service (DaaS) focuses on delivering virtual desktops rather than managing application stacks directly.

Thus, IaaS stands out as the model that enables users to fully manage their