KVM (Kernel-based Virtual Machine) is a hardware virtualization technology that allows you to create a complete virtual analog of a physical server on a host machine. KVM allows you to create a virtual server completely isolated from the "neighbors" with its own OS kernel, which the user can configure and modify for his own needs without restrictions. Each VDS is allocated its own area in RAM and hard disk space, its own network card, which increases the overall reliability of such a VDS server.
IPMI is a remote server management interface designed for offline monitoring and management of functions built directly into the server hardware. IPMI operates independently of the operating system on the server, which allows you to perform various actions with the server. For example, through IPMI, you can reboot the server, reinstall the operating system, or configure logging.