OT

Key Points

• Used in industrial and infrastructure operations
• Focuses on physical process control
• Includes controllers, sensors, and supervisory systems
• Distinct from IT but increasingly connected
• Operates across industrial automation, utilities, transport, and infrastructure systems

Definition

OT is operational technology, the hardware and software used to monitor or control physical processes, equipment, and infrastructure.

Concept

OT is a core industrial term used for the technology that controls or monitors physical systems. It exists to separate operational control environments from general IT systems while recognizing that the two are often connected. OT is used in industrial automation, utilities, transport, and infrastructure operations. It includes controllers, sensors, actuators, and supervisory systems that interact directly with the physical world.

Explainer

OT systems work by connecting sensors, controllers, actuators, and supervisory systems so physical operations can be observed and managed. Constraints include real-time behavior, safety requirements, long equipment lifecycles, and the need to manage connectivity carefully when OT systems are connected to broader IT environments. Failure modes include control failure, safety issues, communication loss, incompatible upgrades, and security exposure when OT and IT are not properly separated or managed. Tradeoffs involve integration versus isolation, modern connectivity versus risk management, and operational visibility versus system complexity. OT matters because physical operations depend on specialized technology and control systems that are not the same as ordinary IT. Cross-industry relevance is strong in every sector that operates physical assets or processes.