A company is running a large fleet of Compute Engine instances for a batch processing workload. The workload is fault-tolerant, can be interrupted, and takes about 4 hours to complete. They want to drastically reduce their compute costs. Which THREE strategies should they combine to achieve the lowest possible cost? (Select THREE)

Answer options:

Use Spot VMs

Purchase 3-year Committed Use Discounts (CUDs)

Use Custom Machine Types

Deploy in a region with lower base pricing

Enable Sustained Use Discounts (SUDs)

Use Premium Tier Network Service

How to approach this question

Select the cost optimization techniques that apply to short-lived, interruptible workloads.

Full Answer

Use Spot VMs, Use Custom Machine Types, Deploy in a region with lower base pricing

For fault-tolerant batch jobs, Spot VMs provide the deepest discount. Combining Spot VMs with Custom Machine Types ensures you only pay for the exact resources you need. Finally, deploying the workload in a region with lower base compute prices (like us-central1) further reduces the total bill.

Common mistakes

Selecting CUDs (B) or SUDs (E), which are designed for long-running, stable workloads, not short batch jobs.

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