While adding Aria Operations product in a new or existing environment in Aria Suite lifecycle we do not see any option to configure or select a load balancer.
Aria operations 8.16.x or later
Aria Suite lifecycle 8.16.x or later
Aria Suite lifecycle is standalone and not in VCF aware mode.
The option to add a load balancer while deploying Aria Operations is only available when Aria Suite lifecycle is in 'VCF aware' mode, that is deployed via SDDC manager.
if True, SDDC manger creates a Load balancer in NSX-T environment on request from Aria Suite lifecycle.