Multi-tier hybrid infrastructure spanning Active Directory, file servers, application servers, and monitoring systems across segmented LANs and DMZ zones. Traffic flows from the Internet through DMZ-hosted management tools (OPMANAGERPLUSWIN, Monitoring, GLPI) to internal LAN segments (INFRA, PROD, TEST, LAN-iE, LAN-iPro, LAN-LocPro) where domain controllers, development servers, and business applications reside. This architecture demonstrates defense-in-depth with isolated backup domains, role-based server groupings (DSI-Supervision, DSI-Tests, DSI-Deploiement, DEV-iE, DEV-iPro, ADV, SUP-iE, SUP-iPro, CSL-iE, DEMOS-iE, DEMOS-iPro), and centralized monitoring via ManageEngine and GLPI. The design prioritizes network segmentation, backup isolation, and operational visibility across development, test, and production workloads. Fork this diagram on Diagrams.so to customize IP ranges, add firewall rules, or adapt for your organization's security policies.