Operational technology – Operational technology (OT) encompasses everything that is bolted to the building, from HVAC systems made up of chillers, rooftop units, sensors, thermostats, air handlers, etc. to the fiber that runs between the drywall and connects switches to routers.
Technology included in OT can be supervisory control and data acquisition (SCADA) systems, distributed control systems (DCS), remote terminal units (RTUs) and programmable logic controllers (PLCs). Unlike IT, the OT systems require continuous uptime with predictable data usage and a strong need for data processing capabilities, although the data is small compared to IT data (unless video surveillance systems are attached to the OT system).
OT networking includes:
- Fiber or ethernet infrastructure
- Secure connectivity
OT devices include:
- HVAC and component systems
- Video surveillance
- Access control
- Electrical meters
Bridging the operational technology and internet of things divide
Creating a circle of improvement