A company is moving its virtual machines (VMs) from an on-premises environment to the AWS Cloud. The company plans to deploy Amazon EC2 instances. Which cloud computing model will the company use in this scenario?

The scenario describes migrating on-premises virtual machines to Amazon EC2 instances. Amazon EC2 provides fundamental computing resources (virtual servers, storage, networking) over the internet. The user is responsible for managing the operating system and applications, while AWS manages the underlying physical hardware and virtualization layer. This model, where a vendor provides the core computing infrastructure, is defined as Infrastructure as a Service (IaaS).

A. Platform as a Service (PaaS) abstracts the underlying infrastructure, allowing users to focus only on deploying and managing applications, which is not the case here.
C. Function as a Service (FaaS) is a serverless model for running code in response to events, not for deploying and managing persistent virtual machines.
D. Software as a Service (SaaS) provides a complete, managed software product to end-users, not underlying infrastructure components like VMs.

1. AWS. (n.d.). What is Cloud Computing? AWS. Retrieved from https://aws.amazon.com/what-is-cloud-computing/. (Under the section "Types of cloud computing," the description of IaaS matches the use of Amazon EC2).

2. AWS. (n.d.). Amazon EC2. AWS. Retrieved from https://aws.amazon.com/ec2/. (The product page describes EC2 as providing "secure and resizable compute capacity," which is a core IaaS offering).