Which cloud “As a Service” model is a form of cloud computing that delivers fundamental compute, network, and storage resources to consumers on-demand, over the internet, and on a pay-as-you-go basis?

(A) Software as a Service
(B) Platform as a Service
(C) Infrastructure as a Service
(D) Database as a Service

Infrastructure as a Service is the correct answer.

IaaS gives users cloud-based alternatives to on-premise infrastructure, so businesses can avoid investing in expensive on-site resources. With IaaS, you can buy what you need, as you need it, and purchase more as your business grows. IaaS solutions are highly flexible and highly scalable, and you can replace it whenever you need without losing money on your initial investment. IaaS examples: AWS EC2, Rackspace, Google Compute Engine (GCE), Digital Ocean