GCP Professional Cloud Architect Practice Question
Your team is migrating a revenue-generating e-commerce site to Google Cloud. Executive leadership has asked for a single KPI that can be tracked weekly and incorporated into the ROI model for the migration. The KPI must directly connect an operational improvement delivered by the new architecture to the financial impact on the business. Which KPI best satisfies this requirement?
Reduction in mean time to recovery (MTTR) multiplied by historical revenue lost per minute of downtime.
Percentage of production workloads running in auto-scaling managed instance groups.
Ratio of objects stored in Cloud Storage Nearline versus Standard class.
Change in Net Promoter Score (NPS) for online customers after migration.
The reduction in mean time to recovery (MTTR) represents a measurable operational improvement delivered by the new cloud architecture-faster automated failover and self-healing. When the MTTR improvement is multiplied by the site's historical revenue loss per minute of outage, it converts the technical gain into a monetary figure that can be rolled into an ROI calculation. While NPS is valuable, it is an indirect, lagging indicator. The share of objects in Nearline and the percentage of workloads on managed instance groups are useful engineering metrics but do not translate directly into revenue impact without additional assumptions.
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What is MTTR and why is it used as a key metric?
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How can automating failover and self-healing improve MTTR?
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Why is NPS not suitable as a KPI for ROI in this context?
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What is Mean Time to Recovery (MTTR) in cloud operations?
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How does MTTR directly impact revenue in an e-commerce context?
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Why is NPS not the best KPI for ROI modeling during migration?
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GCP Professional Cloud Architect
Designing and planning a cloud solution architecture
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