"SaaS" stands for Software as a Service, a cloud computing model that delivers software applications via the internet. Instead of installing software locally on individual devices, users access it through a web browser, allowing for easy updates and collaboration. SaaS eliminates the need for physical infrastructure and enables subscriptions, reducing costs for businesses. Examples include popular applications like Google Workspace, Salesforce, and Microsoft 365. This model fosters flexibility, scalability, and remote accessibility for users.