Which cloud service model provides virtualized computing resources such as virtual machines and storage?

Which cloud service model provides virtualized computing resources such as virtual machines and storage?

• A. PaaS
• B. SaaS
• C. DaaS
• D. IaaS

Answer: (D)

Providing virtualized computing resources such as virtual machines and storage is the hallmark of Infrastructure as a Service. In this model, you get the raw building blocks of computing—virtual machines, storage, and networking—so you can install and manage your own operating systems and applications while the provider handles the underlying hardware and virtualization. Platform as a Service abstracts away the infrastructure to offer a runtime and development tools for building apps, but you don’t control the underlying OS or hardware. Software as a Service delivers fully ready-to-use applications managed by the provider. Desktop as a Service focuses on delivering virtual desktops to users rather than general compute resources. Because the question specifies virtual machines and storage, Infrastructure as a Service is the best fit.

Providing virtualized computing resources such as virtual machines and storage is the hallmark of Infrastructure as a Service. In this model, you get the raw building blocks of computing—virtual machines, storage, and networking—so you can install and manage your own operating systems and applications while the provider handles the underlying hardware and virtualization.

Platform as a Service abstracts away the infrastructure to offer a runtime and development tools for building apps, but you don’t control the underlying OS or hardware. Software as a Service delivers fully ready-to-use applications managed by the provider. Desktop as a Service focuses on delivering virtual desktops to users rather than general compute resources. Because the question specifies virtual machines and storage, Infrastructure as a Service is the best fit.