ISA-95

ISA-95 is an international standard (ANSI/ISA‑95, also published as IEC 62264) that specifies models, terminology, and interface structures for integrating enterprise and control systems in manufacturing.

Operationally, ISA‑95:

• Defines functional levels for manufacturing activities, from enterprise planning to process control (commonly Levels 0–4).
• Provides reference models for how information flows between business systems (such as ERP) and manufacturing systems (such as MES, SCADA, and control systems).
• Standardizes key concepts, object models, and data structures related to production, quality, inventory, and maintenance.
• Describes interfaces between enterprise-level applications and manufacturing operations management applications.

In practice, ISA‑95 is used as a blueprint for designing, documenting, and implementing integrations between IT systems and operational technology (OT) in manufacturing environments.