Software as a Service (SaaS) is an increasingly popular model for delivering software applications to businesses and individual users. It provides users with access to applications over the internet, eliminating the need for them to install and maintain their own software. This is a convenient way to use software, as users are able to access their applications from any device with an internet connection.

A real world example of SaaS is Salesforce, a cloud-based customer relationship management (CRM) platform. Salesforce is used by businesses to manage customer data, such as contacts, orders, and leads. It also allows users to track performance, monitor sales activity, and analyze customer data.

Other examples of SaaS applications include Dropbox, Microsoft Office 365, Zendesk, Asana, and MailChimp. Using SaaS applications has numerous benefits for businesses, such as reducing the need to maintain their own software, making it easier to keep applications up to date, and providing better security for their data.