Platform & DevOps·Running it: capacity, failure and recovery
you can survive an entire region disappearing, and you now have a data replication problem in every single service.
Multi-region
Also calledmulti-region architecture, geo-redundancy
Running in more than one region so a regional failure is survivable, or so users are served near where they are. It is the largest single step-change in architectural complexity available, because it forces a decision about consistency for every piece of state you own. Most organisations that say they need it need multi-zone and a tested restore, and the honest question is what event you are buying insurance against.