Software as a Service (SaaS) is a cloud-based software delivery model that enables users to access software applications via the internet, eliminating the need for installation and maintenance. It is becoming increasingly popular among businesses as it is cost-effective and efficient. For example, if a company wants to use a customer relationship management (CRM) platform, they can access the application through a web browser or mobile device. The CRM software will be hosted and managed by a third-party provider, who will be responsible for delivering the software and providing technical support.

The advantages of SaaS include scalability, cost-effectiveness and security. Businesses can increase or decrease their usage of the software depending on their needs, and can access applications on a pay-as-you-go basis. Furthermore, businesses can rest assured that the software is regularly updated and maintained by the third-party provider, providing a secure and reliable way to access software applications.