Which statement best describes the cloud service model PaaS in cloud computing?

Which statement best describes the cloud service model PaaS in cloud computing?

• A. Provides virtualized infrastructure (compute, storage, and networking).
• B. Delivers a managed application platform (runtime and middleware).
• C. Offers fully built software accessed via the internet.
• D. Provides on-premises hardware management.

Answer: (B)

PaaS is about providing a ready-to-use platform for applications, where the cloud provider handles the runtime and middleware so developers can focus on writing and deploying code rather than managing servers, operating systems, or software layers. In this model, you don’t worry about the underlying infrastructure or the software stack beyond your application itself; the platform handles scaling, updates, and provisioning. This makes it a perfect environment for building, testing, deploying, and scaling apps quickly. By contrast, the option that describes virtualized infrastructure corresponds to IaaS, where you manage the OS and applications on top of the hardware. The idea of fully built software accessed via the internet refers to SaaS, where you use applications provided entirely by the vendor. The notion of on-premises hardware management isn’t a cloud service model at all.

PaaS is about providing a ready-to-use platform for applications, where the cloud provider handles the runtime and middleware so developers can focus on writing and deploying code rather than managing servers, operating systems, or software layers. In this model, you don’t worry about the underlying infrastructure or the software stack beyond your application itself; the platform handles scaling, updates, and provisioning.

This makes it a perfect environment for building, testing, deploying, and scaling apps quickly. By contrast, the option that describes virtualized infrastructure corresponds to IaaS, where you manage the OS and applications on top of the hardware. The idea of fully built software accessed via the internet refers to SaaS, where you use applications provided entirely by the vendor. The notion of on-premises hardware management isn’t a cloud service model at all.