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Question 1
In which cloud service model does the cloud provider manage the operating system, middleware, and runtime, while the customer manages only their applications and data?
Answer: Platform as a Service (PaaS). The provider handles the underlying infrastructure and platform layers, freeing developers to focus on building and deploying applications.
Question 2
Which cloud service model gives customers the most control over the underlying infrastructure, including the operating system and installed software?
Answer: Infrastructure as a Service (IaaS). Customers rent virtualized compute, storage, and networking resources and are responsible for managing everything above the hypervisor layer.
Question 3
A company uses Microsoft 365 for email and document collaboration without managing any servers or software updates. Which cloud service model does this represent?
Answer: Software as a Service (SaaS). The provider manages everything — infrastructure, platform, and the application itself — and users simply access the software via a browser or thin client.
Question 4
Under the shared responsibility model in IaaS, which component is the customer solely responsible for?
Answer: The customer is solely responsible for the data, access management, and applications they deploy. The cloud provider is responsible for the physical hardware, network, and hypervisor.
Question 5
Which cloud service model shifts the most operational responsibility to the cloud provider, leaving the customer responsible for the least?
Answer: Software as a Service (SaaS). The provider manages the infrastructure, platform, and application, while the customer is only responsible for their data and user access.