Originally published on AI Tech Connect.
What breaks once you have two live regions Teams go multi-region for three reasons — latency, residency and resilience — and those three pull in different directions, because latency is a gradient you can trade against, residency is a hard boolean per data class, and resilience exists precisely to move traffic that residency exists to pin. That tension, and the classify-then-route gateway that resolves it, is the subject of our existing guide to data residency for AI apps: DPDP and GDPR routing. Start there if you have not set up residency routing at all. This article is about what breaks once you have two live regions and the router is already correct. That distinction matters because the failure modes are completely different. Before you split, the risk is that you route the wrong…
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