What type of cloud service provides software delivery through the internet?

The correct answer is SaaS, which stands for Software as a Service. This cloud service model delivers applications over the internet, allowing users to access software without the need for installation or maintenance on local devices. Users can simply connect to the service via a web browser and utilize the software on a subscription basis or pay for usage. This delivery method eliminates the complexities of software management, including installation, updates, and infrastructure management.

In contrast, IaaS, or Infrastructure as a Service, provides virtualized computing resources over the internet, allowing customers to manage their own software stack, including operating systems and applications, but it does not deliver the software itself. PaaS, or Platform as a Service, offers a platform allowing developers to create and host applications, but it still requires users to manage the deployed applications. XaaS, or Anything as a Service, is a broader term encompassing a variety of services delivered over the internet, including IaaS, PaaS, and SaaS, but it does not specifically refer to software delivery.