Free Microsoft 365 Fundamentals MS-900 Practice Question

In Infrastructure as a Service (IaaS), customers are responsible for installing and managing their own operating systems, middleware, and applications. The cloud provider manages the fundamental infrastructure, including networking, storage, servers, and virtualization. This offers greater flexibility for customization but requires more management effort from the customer. Platform as a Service (PaaS) abstracts the operating system layer, allowing customers to focus on deploying applications without managing the underlying infrastructure. Software as a Service (SaaS) delivers fully managed applications to customers, who simply use the software without worrying about maintenance or infrastructure.