I built a site-to-site topology with a production site similar to 1x scvmm, 1x active directory (domain A), 1x ZVM and 1x Hyper-V, all windows server 2016, on the other hand, site disaster recovery if look with 1x scvmm, 1x active directory (domain b), 1x ZVM and 1x Hyper-V. Both sites communicate via vpn and are fully independent My question is about best practices or possible issue of having two different domains (A and B)?