Sole-tenant nodes in Google Compute Engine provide dedicated physical servers exclusively for your project's virtual machines . This setup ensures that your VMs do not share host hardware with VMs from other projects, offering enhanced security and compliance by maintaining physical isolation. Sole-tenant nodes support the same features as standard Compute Engine VMs, including transparent scheduling and block storage, while adding an extra layer of hardware isolation. Key Features and Functionality: - Dedicated Hardware: Each sole-tenant node is a physical server allocated solely to your project, ensuring that only your VMs run on that hardware. - Flexible VM Provisioning: You can provision multiple VMs of various machine types on a single node, optimizing resource utilization. - CPU Overcommit: Over-provision virtual CPU resources by up to two times, allowing for efficient use of host CPUs and cost optimization. - Live Migration: Maintain VM uptime during host maintenance events through live migration capabilities. - Node Affinity Labels: Control VM placement using affinity labels to group or separate workloads based on your requirements. Primary Value and Problem Solved: Sole-tenant nodes address the need for physical isolation in cloud environments, which is crucial for organizations with strict compliance, regulatory, or security requirements. By providing dedicated hardware, they eliminate the "noisy neighbor" effect, ensuring consistent and predictable performance for sensitive workloads. Additionally, they facilitate easier management of software licenses that require per-core or per-processor licensing, as you have full visibility and control over the underlying hardware.