Scaling Container Registries Across Regions: Lessons from Azure's Multi-Cluster Architecture

Managing container images across distributed clusters presents hidden complexities that naive approaches fail to address. This technical case study explores critical trade-offs between latency, availability, and operational overhead when scaling registries globally, demonstrating why architectural decisions made early can prevent costly failures. The detailed analysis of different strategies—from single-region bottlenecks to consistency challenges—provides actionable insights for teams operating cloud-native infrastructure at scale.