The Purdue Reference Standard is a widely adopted framework that defines hierarchical levels within industrial automation networks. It establishes standardized communication pathways between industrial control systems (ICS) and enterprise IT environments, ensuring interoperability and cybersecurity.

By structuring automation systems into layers, this reference standard enables manufacturers to manage data flow between devices, controllers, SCADA systems, and enterprise applications. It plays a crucial role in defining security boundaries, allowing IT and OT systems to function independently while maintaining connectivity.

Organizations following the Purdue Reference Standard benefit from improved operational efficiency, enhanced security, and seamless IT/OT integration. This framework serves as the foundation for implementing modern industrial cybersecurity strategies and digital transformation initiatives.