Topic: zero-downtime
- Zero-Downtime Across AWS Regions: The Decisions Behind Moving 33 Production Microservices
A region-to-region migration is sold as a redeploy. The hard part is everything the old region quietly assumed: a machine image baked per release, a self-hosted artifact server, and one load balancer per service. Here is how 33 microservices moved with no outage, and the decisions that made it possible.