Active-active deployment across multiple regions delivers the highest availability you can achieve on a single cloud provider. Active-active across two or more providers is the only model in this ranking that also survives incidents affecting many regions of one provider or a global service at once. Each step up in resilience costs more and adds data-consistency work, so the right tier depends on each service’s tolerance for downtime and data loss.

This guide ranks seven architecture models from single zone to multi-cloud active-active, then tests each tier against aggregate data from 62 major cloud incidents tracked between July 2020 and October 2026.

Disclosure: Control Plane publishes this guide.

TL;DR

The direct answer. Active-active multi-region on one provider gives the highest single-provider resilience. Active-active across two or more providers is the only model in this ranking that also covers multi-region and global-service failures at a single provider.

Tiers, lowest to highest.…