What is the key characteristic of Software as a Service (SaaS)?

The key characteristic of Software as a Service (SaaS) is that it delivers software applications over the internet on a subscription basis. This model allows users to access software remotely without needing to install or manage it locally on their devices. SaaS solutions are typically hosted in the cloud, which means that updates, maintenance, and the server infrastructure are managed by the service provider.

This delivery method offers several advantages, including scalability, ease of access from any device with an internet connection, and often reduced upfront costs since users pay a recurring subscription fee instead of a large one-time purchase. Furthermore, users benefit from automatic updates and feature enhancements without the need for manual installations.

In contrast, alternatives that suggest detailed hardware management, limitations to specific operating systems, or restrictions on custom configurations generally describe other types of software deployment models rather than the SaaS framework. SaaS applications are designed to be widely accessible and flexible, catering to various environments and user needs.