Which type of commercial system includes SaaS, IaaS, and PaaS offerings by cloud service providers?

Which type of commercial system includes SaaS, IaaS, and PaaS offerings by cloud service providers?

• A. Backbone systems
• B. Turnkey systems
• C. Vendor-supported systems
• D. General accounting systems

Answer: (C)

Cloud service models like SaaS, IaaS, and PaaS are offered and maintained by cloud service vendors who operate the service over the internet. This makes them vendor-supported systems, because the vendor handles hosting, updates, security, and ongoing operation, while customers simply access and pay for the service. The other terms don’t capture this delivery model: backbone systems refer to core network infrastructure, turnkey systems are prebuilt complete solutions, and general accounting software is just a software category without specifying outsourced cloud delivery. So the best fit is vendor-supported systems.

Cloud service models like SaaS, IaaS, and PaaS are offered and maintained by cloud service vendors who operate the service over the internet. This makes them vendor-supported systems, because the vendor handles hosting, updates, security, and ongoing operation, while customers simply access and pay for the service. The other terms don’t capture this delivery model: backbone systems refer to core network infrastructure, turnkey systems are prebuilt complete solutions, and general accounting software is just a software category without specifying outsourced cloud delivery. So the best fit is vendor-supported systems.