Purdue Model Reference Architecture
The Purdue Model is a functional reference architecture for industrial control systems that provides a structured approach to organizing operational technology (OT) and information technology (IT) systems across distinct hierarchical levels.
Industrial Foundation
Originally developed by Purdue University for manufacturing environments, this model has become the industry standard for OT security architecture.
Security Segmentation
Provides clear network segmentation boundaries to limit lateral movement and protect critical control systems from cyber threats.
Risk Management
Enables systematic risk assessment by categorizing assets based on their operational criticality and exposure to potential threats.
Risk Level Indicators
Interactive Purdue Model Architecture
Click on devices to view detailed threat intelligence and security information
Levels 4-5: Enterprise & Business
Corporate networks, ERP, and business systems
Level 3.5: Demilitarized Zone (DMZ)
Security boundary between IT and OT networks
Level 3: Site Operations & Manufacturing
MES, batch management, and production systems
Level 2: Supervisory Control
SCADA, HMI, and operator workstations
Level 1: Basic Control
PLCs, RTUs, and control systems
Level 0: Physical Process
Sensors, actuators, and field devices