OT security was traditionally built around the control room: PLCs, HMIs, the systems directly running a process. But the systems that determine whether operations stay running now extend well past it. Connected OT, cloud services, and remote access infrastructure are part of the environment too. If a system's failure can stop production, affect safety, or compromise output, it's in scope.
That's what is explained as xOT (Extended Operational Technology), not a new category of device, but a st
