On-premises Oracle enterprise integration architecture connects Siebel CRM, WebLogic Server, SOA Suite, Oracle Apex, and Oracle Analytics Server across DMZ, Application LAN, and Data & Analytics LAN network segments. Load balancers distribute traffic to Siebel CRM Frontend, WebLogic Server, and Oracle Apex, while Oracle DB 26ai clusters support CRM, analytics, and data warehouse workloads. SOA Suite orchestrates bidirectional integration between the MU Government ESB InfoHighway serving nine ministries and the External Integration Hub connecting six digital services including MauPass, MauSign, and MoWallet. This architecture demonstrates how government agencies achieve secure, scalable integration between legacy enterprise systems and modern digital services while maintaining network segmentation and centralized data analytics. Fork this diagram on Diagrams.so to customize network zones, add redundancy layers, or model your own multi-tier government integration architecture.