Security Pitfalls & Solutions of Multiregion Cloud Architectures

This report explains the security pitfalls of multiregion Azure architectures—including configuration drift, over-permissioned identities, secrets replication challenges, insecure data replication and routing, and degraded security during failover—and provides concise best practices (centralized Azure AD, IaC for consistent deployments, private networking, Key Vault multi-instance strategies, centralized logging with Azure Sentinel, and Azure-native controls like Front Door, WAF, Azure Policy) to ensure resilience is achieved without expanding the attack surface.