Workload Balancing (WLB) which was reintroduced in 6.5 is enhanced with XenServer 7.x
Workload Balancing 7.3 is supported on XenServer 7.x and has an enhanced WLB audit log session reuse starting with XenServer 7.3.
Details here: https://tinyurl.com/yxv77e6o
Citrix, Citrix Hypervisor/8, Premium
Automated Live Migration, VM Mobility, VM Mobility and HA