Software as a Service (SaaS) is a cloud computing model where applications are hosted by a service provider and made available to customers over the internet. Users can access SaaS applications from any internet-enabled device, which makes it a popular choice for businesses.

• SaaS eliminates the need for users to install and run applications on their own computers or in their own data centers.
• It can significantly reduce the cost of software ownership by removing the need for technical staff to manage install, manage, and upgrade software.

SaaS works by hosting applications on a cloud service provider's infrastructure.

• Users access the SaaS application over the internet, usually through a web browser.
• The SaaS provider takes care of all the underlying infrastructure, including servers, storage, and networking.

A business, BizCorp, needs a customer relationship management (CRM) system. Instead of buying and installing a CRM software on their own servers, BizCorp subscribes to a SaaS-based CRM system. They access the system over the internet, and the SaaS provider takes care of all the maintenance and upgrades.