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Which cloud service provides on-demand access to virtual machines, storage, and networks?
- SaaS
- PaaS
- IaaS
- FaaS
Answer: IaaS
IaaS (Infrastructure as a Service) provides fundamental computing resources: virtual machines, storage, networks, and operating systems. Customers manage applications, data, runtime, and middleware. Examples: AWS EC2, Azure VMs, Google Compute Engine. Offers maximum flexibility but requires more management than PaaS or SaaS.