Don't Get Fooled by Multi-Cloud: Architecture Decisions and Lessons from Vendor Lock-in to Cross-Cloud Disaster Recovery
Overview At 3 AM, your phone vibrates. An alert message: a major cloud provider’s East China region storage service is experiencing widespread unavailability. Your core business is fully deployed in this region, with the primary database there too. The outage has lasted 12 minutes, customers are complaining, and your boss is asking “how long to recover” in the group chat. You know the truth: the cross-region disaster recovery plan was reviewed six months ago but got cut due to “high costs....