By Jen Sovada, General Manager, Public Sector, Claroty and Guest Author

Operational technology, or OT, is the quiet, behind‑the‑scenes technology that keeps the physical world around us running safely, reliably, and on time. It monitors and controls things like pumps, valves, switches, and motors in our water systems, power grid, traffic lights, building controls, data centers, and factories. If Information Technology (IT) is about emails, apps, and data, OT is about clean water at the tap, lights that turn on when you flip the switch, and a school day that isn’t canceled because a boiler failed overnight.

In Loudoun County, OT is woven into almost everything residents rely on but rarely see. Loudoun Water uses networks of sensors, controllers, and communication systems spread across more than 60 water and wastewater facilities to keep safe drinking water flowing and wastewater properly treated every day. These systems automatically start and stop pumps, adjust chemical levels, and route water where it needs to go, often in real time, so most of us never have to think about what it takes to keep the water flowing. Similarly, the high‑voltage transmission lines and substations that feed our neighborhoods and booming data center corridor depend on OT to balance power flows, protect equipment, and recover quickly from faults.

OT is also embedded in the places we work, learn, and receive care. Heating and cooling systems in schools, elevators and fire controls in office buildings, and many devices inside clinics and hospitals are run by OT that automatically manages temperature, pressure, safety conditions, and the actual medical devices themselves like MRI machines. When OT works well, the school is the right temperature on a winter morning, the elevator doors open as expected, and critical medical equipment stays powered and stable—even when the broader grid is stressed.

All of this adds up to a “life uninterrupted.” OT is the digital nervous system for the physical services we care about most: water, power, transportation, public safety, and the economic engines that support our families and communities. When that nervous system is healthy and secure, small problems stay small, outages are shorter, and the county can grow—whether that is new neighborhoods, schools, or data centers—without sacrificing resilience.

But as OT becomes more connected, it also becomes more exposed to cyber threats. Adversaries no longer need physical access to a plant or substation to cause disruption; they can target the control systems themselves. That is why OT cybersecurity—knowing what’s on these networks, segmenting and monitoring them, and planning for how to operate through an attack—is now a core part of protecting our local quality of life, not just a technical concern for utilities and data centers.

Ultimately, operational technology is the foundation of Loudoun County’s unique standard of living, bridging the gap between our rapid digital growth and our everyday physical needs. By ensuring that our world-class tech sector remains powered, our schools remain comfortable, and our suburban and rural landscapes remain safely connected, OT transforms complex engineering into the simple, reliable comforts of home. Safeguarding this technology is about preserving the peace of mind and community resilience that makes Loudoun County one of the premier places to live, work, and thrive.

For Loudoun residents, the takeaway is simple: OT is the invisible layer that lets us trust that tomorrow will look and feel a lot like today, no matter how complex the technology under the hood becomes. As our county continues to grow, paying attention to how we secure and modernize OT is one of the most important things we can do to keep that life uninterrupted.

This guest blog was submitted by a member of our Loudoun CyberTech networking group. Loudoun CyberTech meets once per month at Honor Brewing Company in Sterling to discuss trends, policies, guidance, and more, as it relates to the growing cyber and tech industry in Loudoun County and the surrounding region. Launched in 2021, Loudoun CyberTech is a free networking group that welcomes not only cybersecurity experts but also practitioners and policy makers from various tech fields such as artificial intelligence (AI), consulting, training, software development, and more. To learn more or join an event, please visit https://www.meetup.com/loudoun-cybertech.