When using an Infrastructure as a Service solution, what is a key benefit provided to the customer?

IaaS services are typically offered on a consumption-based pricing model, meaning customers are billed based on the specific units of compute, storage, or network resources they use. This aligns costs directly with usage, eliminating large upfront capital expenditures and providing financial flexibility as resources are consumed on demand.

While scalability is a benefit of IaaS, the ability to scale based on projected usage is less precise than scaling based on actual usage, and 'metered and priced' more directly describes a key benefit of the IaaS business model.

Increased energy and cooling efficiencies are benefits primarily realized by the cloud provider due to economies of scale, not a direct benefit provided to the customer as a key feature of IaaS.

While some cost elements are transferred to the provider (e.g., hardware purchase and maintenance), the cost of ownership in a broader sense for the managed components remains with the customer, and this choice is less specific than metered usage.