Which vSphere 6 Standard Edition feature will allow an organization to ensure that critical multi- threaded applications have the maximum possible uptime?

Fault Tolerance with multi-vCPU support was introduced in vSphere 6 but requires Enterprise Plus edition - it is not available in Standard Edition for multi-threaded applications requiring multiple vCPUs.

vSphere High Availability monitors host and VM health and automatically restarts failed VMs on other available hosts in the cluster, ensuring uptime for critical workloads. In the Standard Edition, HA is fully supported for any VM regardless of vCPU count, making it the correct choice for multi-threaded applications. Fault Tolerance with multi-vCPU support (vSphere 6 FT) requires Enterprise Plus licensing, so HA is the highest-tier uptime feature available in Standard.

Distributed Resource Scheduler balances workload across hosts for performance optimization but provides no failover or uptime guarantee - it also requires Enterprise Plus edition.

App HA is a feature that monitors application-level health inside guest OSes but is not a core vSphere Standard Edition capability and does not replace platform-level VM failover.