PATTERN Cited by 1 source

Companion region failover

Definition

Pre-approve companion regions — paired regional zones within the same data-residency / compliance boundary — so that producers and consumers can fail over without violating regulatory commitments. This turns disaster recovery from an improvised, geography-shifting decision into a pre-vetted, policy-compliant path.

Why it matters

Global streaming platforms cannot arbitrarily move traffic between geographies during DR events because customer data residency agreements, GDPR, or sector-specific regulations constrain where data can land. Companion regions document and encode those constraints in advance, enabling fast operational decisions under pressure.

Seen in

• sources/2026-07-28-atlassian-scaling-streamhub-transitioning-from-kinesis-to-kafka — Atlassian StreamHub establishes pre-approved companion regions for compliant regional failover