A company plans to move its web front-end from an on-premises data center to Google Cloud. Traffic to the site can surge unexpectedly and then drop back to normal within minutes. The team wants to minimize spending on idle resources yet keep response times low during peak demand. Which Compute Engine feature best meets this requirement?
Configuring an autoscaling managed instance group
Purchasing three-year committed use discounts
Taking regular persistent disk snapshots
Connecting the data center with Cloud Interconnect
Autoscaling managed instance groups monitor metrics such as CPU utilization and automatically add or remove identical VM instances to match current load. This elasticity means the company pays for additional instances only when demand rises and scales back when demand falls, reducing costs while maintaining performance. Persistent disk snapshots provide backup, not elasticity. Committed use discounts lower long-term costs but still require paying for reserved capacity. Cloud Interconnect offers private connectivity but does not adjust compute capacity.
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