A company leases a cloud-based payroll system. Which cloud computing technology is this company using?

The company is using a cloud-based payroll system, which is a complete application delivered over the internet. This model, where the software is hosted and managed by a third-party provider and made available to users over the internet, is known as Software as a Service (SaaS).

• Infrastructure as a Service (IaaS) provides virtualized computing resources over the internet.
• Platform as a Service (PaaS) provides a platform for developing, running, and managing applications without the complexity of building and maintaining the infrastructure.
• Software as a Service (SaaS) delivers ready-to-use applications over the internet.
• Wireless as a Service (WaaS) is not a standard cloud computing service model.

The correct option is:

• software as a service (SaaS)