Answer
The right model depends on application behavior, acceptable lag, operational complexity, and how much hands-on oversight the internal team can absorb. Some environments need fine-grained journal-based replication and disciplined role-swap testing, while others value a simpler operational model even if it narrows flexibility.
Buyers should ask vendors to explain not just how replication moves data, but how exceptions are detected, how swaps are tested, and what daily care the platform requires. A model that looks powerful in a demo can still be a poor fit if the staff cannot support it consistently.