Provides for outsourcing of the infrastructure of the server and desktops to a service provider.

• A. SaaS
• B. IaaS
• C. Application Streaming
• D. PaaS

Answer: (B)

Outsourcing the infrastructure of servers and desktops to a service provider describes a cloud model focused on providing the underlying hardware and virtualization resources. In this setup you rent compute, storage, and networking—often through virtual machines—and you install and manage your own operating systems and applications on top of that infrastructure. That separation between the infrastructure you rely on and the software you run is what defines this model. The other options center on delivering software directly (SaaS), providing a platform to develop or run applications (PaaS), or streaming applications to users rather than supplying the infrastructure itself (Application Streaming). So the best fit is the model that delivers infrastructure as a service.