Which of the following is a benefit provided by the AWS Cloud?

The correct answer is that users no longer need to guess infrastructure capacity requirements. AWS Cloud's elasticity allows users to scale resources up or down on demand, eliminating the need for upfront over-provisioning or the risk of under-provisioning. This pay-as-you-go model means you only pay for what you use, optimizing costs and performance. The other options are incorrect: Users reduce variable costs by keeping sole ownership of IT hardware: This is incorrect. Cloud computing shifts capital expenses (owning hardware) to variable expenses (paying for services), and AWS owns the underlying hardware. Users keep full control of underlying physical IT hardware: This is incorrect. AWS manages the underlying physical infrastructure. Users interact with virtualized resources. Users retain control of operating systems for managed services: This is incorrect. For many managed services (e.g., Amazon S3, Amazon DynamoDB), AWS manages the operating system and underlying infrastructure entirely. Users control application-level configurations, not the OS.