Software-as-a-Service (SaaS) is an internet-based model of software delivery that gives users access to applications. Rather than buying software or downloading it onto a computer, users can access the software through a web browser or an app. This subscription-based service eliminates the need to install, maintain, and manage the software, making it easier for businesses to keep their software up-to-date and to scale quickly. SaaS also makes it more cost-effective for businesses, provides users with access to the latest version of the software, and offers a more secure environment for data storage and sharing. As a result, SaaS is becoming increasingly popular among businesses and can provide them with various advantages.