What is the process that moves a virtual machine between hosts with no downtime?

Live migration is the process of moving a running virtual machine (VM) from one physical host to another without any interruption to services or applications running on the VM. This is achieved by transferring the VM's memory and state over the network, then switching the execution to the new host. High availability (HA) ensures continuous operation by automatically restarting VMs on healthy hosts after a failure, but it involves downtime. Disaster recovery (DR) focuses on restoring services after a catastrophic event, often involving significant downtime and data loss. Multisite replication involves copying data between geographically separate locations for redundancy, not moving active VMs without downtime.