[keycloak-user] Multi-site/multi-region cluster sync question

After reading the following: https://www.keycloak.org/docs/latest/server_installation/index.html#cross... and https://blog.keycloak.org/2017/09/cross-datacenter-support-in-keycloak.html I am wondering how does it scale? I am trying to work a solution that would have synchronization across multiple data centers in a geographic region as well as with multiple regions. E.G.: region A --> site 1, site 2 region B --> site 3, site 4 region C --> site 5, site 6 My understanding to this point is that region A, sites 1-2 can sync with each other, but can they sync with regions B/C? Thanks. By my hand, I am, Michael G.