What hypervisor is utilized in IBM Cloud for public multi-tenant virtualization?

IBM Cloud utilizes KVM (Kernel-based Virtual Machine) as its hypervisor for public multi-tenant virtualization. KVM is an open-source virtualization technology integrated into the Linux kernel that allows you to run multiple virtual machines (VMs) on a single physical server. It turns the Linux kernel into a bare-metal hypervisor, providing efficient resource management and flexibility, which is crucial for a public cloud environment that requires high scalability and isolated environments for different tenants.

This choice aligns with the platform's emphasis on performance, security, and efficient resource utilization, catering to a diverse range of workloads in a multi-tenant architecture. KVM's architecture supports not only performance optimization but also enhanced security features, making it a suitable choice for IBM Cloud's strategy in managing resources among various clients safely.

Other hypervisors, such as VMware, Hyper-V, and Xen, while they offer their own benefits, are not the designated solution for IBM Cloud's public multi-tenant virtualization. VMware, for instance, is often associated with private cloud or hybrid environments and does not align with IBM Cloud's public service offerings the way KVM does. Hyper-V is primarily used within Microsoft ecosystems, and Xen, although formerly popular, has seen a decline in favor of KVM in