Answer: software as a service (SaaS)

Microsoft 365 is a clear example of Software as a Service (SaaS) because it provides users with access to productivity applications (like Word, Excel, Outlook) over the internet without requiring them to manage the underlying infrastructure or platform. Users simply consume the software through subscription-based access. This differs from IaaS (which provides virtualized computing resources) and PaaS (which provides development platforms), making C the correct choice. The community discussion shows 100% consensus on answer C, with multiple comments explicitly confirming that Microsoft 365 is SaaS, and no alternative answers receiving any support.

Author: LeetQuiz Editorial Team