Software as a Service (SaaS) is a cloud-based approach to delivering software on a subscription basis without requiring local installation. Unlike conventional software models that require installation on local devices or servers, SaaS allows users to access the software directly through a web browser or client, paying monthly or yearly subscription fees.
Many companies offer freemium services, allowing you to download and use specific features at no cost, with the option of buying a premium version of the same software. Popular examples include Adobe Creative Cloud, Zoom, and Google Apps.
SaaS eliminates the need for managing installations and compatibility issues, as providers handle updates, security, and customer support — you can download and enjoy SaaS applications and features as long as you have internet access.