About This Architecture

On-premises SAP and POS integration architecture with segmented VLANs, perimeter security, and middleware-driven data synchronization. Store staff access POS terminals through a DMZ-protected network, while SAP admins manage ERP systems in an isolated VLAN 20, with both systems communicating via REST APIs and message brokers. The architecture enforces network segmentation using internal firewalls, reverse proxies, and WAF protection to minimize blast radius and ensure compliance with enterprise security policies. Fork this diagram on Diagrams.so to customize firewall rules, add disaster recovery paths, or integrate additional middleware components for your retail environment. This pattern is ideal for large retailers requiring strict separation of payment systems from financial ERP while maintaining real-time inventory and sales synchronization.

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How do you design a secure on-premises architecture that integrates SAP ERP with POS systems while maintaining network segmentation and compliance?

This diagram shows a segmented architecture using separate VLANs (VLAN 10 for POS, VLAN 20 for SAP), internal firewalls, and a DMZ with WAF and reverse proxy for perimeter protection. POS and SAP systems communicate via REST APIs and middleware message brokers, with centralized monitoring via Grafana/Nagios, ensuring security, scalability, and real-time data synchronization.