Which feature allows for the movement of virtual machines between different hosts without service disruption?

The feature that facilitates the movement of virtual machines between different hosts without service disruption is vSphere vMotion. This technology enables the live migration of virtual machines, allowing them to be transferred from one physical server to another while they continue to run. This capability is essential for tasks such as load balancing, hardware maintenance, and optimizing resource distribution within a virtualized environment.

During a vMotion operation, the virtual machine's compute state is transferred over the network, enabling the whole process to be completed without noticeable downtime for users. This ensures that applications continue to run seamlessly, maintaining a high level of availability.

In contrast, while Storage vMotion pertains to moving a virtual machine's disk files from one storage location to another without downtime, it does not address the migration of the VM itself between hosts. vSphere Replication is primarily focused on replicating VMs for disaster recovery purposes, and Fault Tolerance offers a mechanism for providing continuous availability by creating a duplicate VM, but it does not involve moving VMs between hosts dynamically. Thus, for the specific need of moving VMs without service disruption, vSphere vMotion is clearly the feature that meets this requirement.