An enterprise is planning to migrate hundreds of legacy on-premises Windows Server and Red Hat Enterprise Linux (RHEL) workloads to Google Compute Engine. Software licensing fees make up a significant portion of the total operating budget because OS vendor licenses are billed on a per-vCPU basis. During pre-migration discovery in Migration Center, performance data reveals that the on-premises servers are substantially over-provisioned. Additionally, the corporate compliance team requires automated, continuous auditing of deployed machine shapes and operating system licensing models post-migration to avoid contractual penalties. Which strategy should the cloud architect implement to optimize licensing costs and ensure ongoing license compliance?

Apply performance-based rightsizing and adjust simultaneous multithreading (SMT) settings in Migration Center, while establishing Cloud Asset Inventory exports and Cloud Audit Logs for ongoing configuration monitoring.: What this solution is Performance-based rightsizing combined with simultaneous multithreading (SMT) tuning in Migration Center optimizes compute resource allocation and direct per-vCPU operating system licensing fees. Combining this optimization with Cloud Asset Inventory and Cloud Audit Logs creates a continuous auditing mechanism that tracks resource configuration changes and licensing compliance across Google Cloud environments. How it meets the requirements Preventing Over-provisioning and Lowering License Costs: Enterprise OS licensing costs (such as Windows Server and RHEL) scale directly with the allocated vCPU count. By analyzing historical performance metrics (such as the 95th percentile utilization) and disabling or compensating for SMT / hyperthreading, the enterprise can provision VMs with fewer vCPUs, substantially cutting per-core licensing fees. Ensuring Ongoing License Compliance Auditing: Leveraging Cloud Asset Inventory allows the organization to track metadata and machine shapes across projects in real time, while Cloud Audit Logs record VM creation and modification events to verify whether Bring Your Own License (BYOL) or Pay-As-You-Go (PAYG) thresholds adhere to vendor agreements. Key advantages and capabilities Granular vCPU Control: Tuning threads per core helps minimize per-vCPU license surcharges for compute instances. Accurate Metric Baselines: Migration Center analyzes actual utilization metrics (e.g., CPU, memory, IOPS) rather than static on-premises capacity allocations. Centralized Metadata Auditing: Cloud Asset Inventory provides a unified view of all compute resources and OS images across the entire resource hierarchy. Continuous Governance: Automated log export into BigQuery or SIEM platforms simplifies compliance reporting and periodic vendor audits. Why this is optimal This approach directly tackles the core driver of enterprise licensing costs—unnecessary vCPU allocations—while using native cloud auditing mechanisms to maintain continuous governance and audit readiness without adding manual operational overhead.