352-001 · Question #512
Which option lists the cloud service models?
The correct answer is C. Infrastructure as a Service, Platform as a Service, and Software as a Service. The three formally recognized cloud service models are IaaS, PaaS, and SaaS, representing progressively higher levels of managed abstraction.
Question
Which option lists the cloud service models?
Options
- AInternet as a Service, Platform as a Service, and Storage as a Service.
- BInfrastructure as a Service, Platform as a Service, and Storage as a Service.
- CInfrastructure as a Service, Platform as a Service, and Software as a Service.
- DInternet as a Service, Product as a Service, and Storage as a Service.
- EInternet as a Service, Platform as a Service, and Software as a Service.
How the community answered
(38 responses)- A3% (1)
- C92% (35)
- D5% (2)
Why each option
The three formally recognized cloud service models are IaaS, PaaS, and SaaS, representing progressively higher levels of managed abstraction.
Internet as a Service is not a recognized cloud service model - the correct infrastructure-layer model is Infrastructure as a Service (IaaS), and Storage as a Service is not one of the three standard models.
Storage as a Service is not one of the three standard cloud service models - the software delivery tier is called Software as a Service (SaaS), not Storage as a Service.
Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS) are the three cloud service models defined by NIST SP 800-145 and universally adopted across the industry. IaaS provides virtualized compute, storage, and networking; PaaS provides a managed application development platform; and SaaS delivers fully managed applications over the internet.
Neither Internet as a Service nor Product as a Service are defined cloud service model designations in any standard cloud computing framework.
Internet as a Service is not a defined cloud service model - the correct term for the infrastructure-level model is Infrastructure as a Service (IaaS), not Internet as a Service.
Concept tested: Standard cloud service models IaaS PaaS SaaS
Source: https://learn.microsoft.com/en-us/training/modules/describe-cloud-service-types/
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