In which cloud service model does the provider deliver fully managed applications to the user?

The correct response is SaaS, which stands for Software as a Service. In this cloud service model, users access fully managed applications over the internet, meaning they do not need to concern themselves with the underlying infrastructure, operating systems, or application maintenance. The service provider handles everything, including software updates, scaling, and security, allowing users to focus on utilizing the software for their specific needs without the need for installation or management.

This model is highly beneficial for businesses looking to streamline processes and reduce the burden of maintaining software. Examples of SaaS include services like Google Workspace, Microsoft 365, and Salesforce, where users can use applications directly through web browsers.

Other models, such as Infrastructure as a Service (IaaS) and Platform as a Service (PaaS), do not offer the same level of management. IaaS provides virtualized computing resources over the internet but does not include fully managed applications, leaving users responsible for managing the software stack. PaaS offers a platform allowing developers to build and deploy applications but still requires management of the applications themselves. DaaS, or Desktop as a Service, provides virtual desktop environments but does not encompass the full application management aspect characteristic of SaaS.