You can add vCenter Servers to vMA using the standard/default fastpass authentication (fpauth). The vMA's fastpass authentication method provides a mechanism to cache the target server's credentials, on the vMA machine, so that you don't have to authenticate every time you run a command against the target server.
Much like the adauth policy, every connection is authenticated but not every command to the authenticated target.
The domain user or its AD group should be assigned at least a read-only role at the target vCenter Server.
The following procedure will guide you through the steps required to add the vCenter Server to the vMA by using fastpass authentication: ...