Enterprise service bus architecture connecting Oracle middleware stack to Mauritius government ministries and digital services. On-premises load balancer distributes traffic to Oracle Siebel CRM, WebLogic Server, and Oracle Apex, each backed by dedicated Oracle Database 26ai instances for CRM, applications, and data warehousing. SOA Suite acts as integration hub routing requests through MU Govt ESB InfoHighway to eight ministries (Civil Status, Passport & Immigration, Revenue Authority, Land Transport, Labour, Registrar General, Health, Education) and five national digital platforms (MauPass, MauSign, MoKloud, MAIA, MoWallet). Oracle Data Integrator and Oracle Analytics Server enable cross-ministry data consolidation and ML workloads on the data warehouse database. This pattern demonstrates how governments achieve interoperability across legacy systems while maintaining security boundaries through DMZ segmentation and VLAN isolation. Fork this diagram on Diagrams.so to model your own government or enterprise ESB topology, customize VLAN structures, or export as .drawio for infrastructure documentation.