Intrigued by the art of cloud architecture? Discover how to design, develop, and manage robust, secure, scalable, and dynamic solutions on Google Cloud as you prepare for the Professional Cloud Architect exam!
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Prepare and test your skills
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An online retail enterprise is evaluating whether to modernize its on-premises monolithic checkout application to a multi-region deployment on Google Cloud. Executive leadership requires a data-driven decision framework that balances business risks, infrastructure costs, and technical performance before approving the migration budget.
The application experiences severe performance bottlenecks and occasional downtime during seasonal sales events, directly resulting in lost revenue and degraded customer satisfaction.
Which strategy should the Cloud Architect recommend to assess the risks and justify the architectural investment?
Establish measurable KPIs and SLIs/SLOs (such as request latency, error budgets, and unit cost per transaction), quantify financial risk from downtime against Total Cost of Ownership (TCO), and validate assumptions using a targeted Proof of Concept (POC)
Calculate the raw compute and storage price differences using the Google Cloud Pricing Calculator and select the lowest-cost single-region configuration without evaluating business impact or service level objectives
Mandate an absolute target of 100% availability for all checkout components and provision maximum multi-region resources to eliminate every technical risk
Immediately deploy an active-active multicloud architecture across two separate cloud providers to eliminate single-vendor dependency and avoid downtime
This approach uses a structured, data-driven evaluation methodology that combines quantitative reliability metrics (Service Level Indicators and Service Level Objectives), financial analysis (Total Cost of Ownership and unit costing), and iterative technical validation through a Proof of Concept (POC).
Balancing architectural investments requires analyzing both the cost of resilience and the business cost of failure. Defining explicit SLOs and conducting a POC enables leadership to objectively determine if multi-region redundancy delivers positive ROI compared to simpler deployment topologies.
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