Exam Cloud Digital Leader topic 1 question 262 discussion

A. A Preemptible or Spot VM on Compute Engine Preemptible VMs (on Google Cloud) or Spot VMs (on AWS/Azure) are highly cost-effective instances designed for workloads that are fault-tolerant and non-time critical. These VMs are significantly cheaper than standard VMs. They can be preempted (terminated) by the cloud provider if resources are needed elsewhere, but since the workload can be restarted without losing work, this is ideal. Other options: B and C: Custom or standard VMs in pay-as-you-go models are more expensive and unnecessary for this use case. D: Cloud Functions are used for event-driven workloads, not for running batch data analysis on VMs. Thus, Preemptible/Spot VMs provide the lowest-cost option for the described scenario.