Amazon ARC Region switch, a tool for orchestrating multi-Region application failover, added four key capabilities: the ability to execute AWS Systems Manager Run Command on managed instances during failover; support for passing payloads to custom Lambda execution blocks to increase function reuse; automatic service quota parity verification between Regions with automated quota increase requests; and a feature to wait for target group health confirmation when scaling compute resources before shifting traffic.
These capabilities help reduce failover risks related to service limits, resource readiness, and command execution errors, enabling more controlled and reliable recovery processes during Regional impairments. Detailed documentation supports their implementation in recovery plans.
Source & further reading
ARC Region switch adds four new capabilities ↗Source published 2026-10-14. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.