Software as a Service (SaaS) is widely utilized across personal and enterprise computing environments where applications are hosted remotely in the cloud and accessed via web browsers. Prominent examples include Microsoft 365 (providing cloud-based productivity apps like Word and Excel), Salesforce (delivering customer relationship management solutions), Zoom (handling video conferencing and virtual meetings), Google Workspace (offering collaborative document editing and cloud storage), and Slack (facilitating team communication and real-time enterprise messaging).