Which cloud service model must you use for a Microsoft Office deployment?

Platform as a Service (PaaS) provides a development and deployment environment for applications, not a fully managed end-user application like Microsoft Office.

Software as a Service (SaaS) delivers complete, ready-to-use applications over the internet, with the vendor managing all underlying infrastructure and platforms. Microsoft 365, which includes Office applications like Word and Excel, is consumed directly by end-users without requiring them to manage any servers, operating systems, or application installations.

Network as a Service (NaaS) is a cloud service model focused on delivering network capabilities virtually, which is not relevant to application deployment like Microsoft Office.

Infrastructure as a Service (IaaS) provides virtualized computing resources, requiring users to manage operating systems, applications, and data themselves, unlike the fully managed Microsoft Office service.