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OT writing.
Practical explanations grouped by the question you’re asking. Start with the foundations, follow the systems and their dependencies, then explore the decisions around them.
OT foundations
Start with what OT does, where it is used, and why physical consequences change the questions.
IT and OT — Similar Technology, Different Consequences
IT and OT often share computers, networks, and people. What changes is the relationship to the physical process, the consequences of failure, and how a change is validated.
OT foundationsWhere Operational Technology Lives — A Map of the Verticals
OT reaches far beyond a factory floor. Explore the processes, systems, and recovery questions across energy, water, transport, buildings, healthcare, manufacturing, and other environments.
Systems & dependencies
Follow a value, understand an industrial conversation, and connect a digital service to the physical process.
The Servers Have Power. Where Does the Heat Go?
Cooling makes a digital service depend on physical systems. Explore why UPS coverage, duplicated equipment, and a successful restart do not each establish resilience on their own.
Process dataFollowing a Batch Through an OT Lab
A controller can be running while its display tells the wrong story. Following one simulated batch makes the difference between availability, process state, and trustworthy data easier to see.
Industrial communicationOT Protocols — A Practical Map of Industrial Communication
From Modbus and industrial fieldbuses to power-system messaging, building automation, and OPC, learn what each protocol family does—and what its name cannot tell you about security.
Security decisions & governance
Connect requirements, investment, operational acceptance, and the evidence behind a decision.
OT Governance and Compliance — Which Rules Apply Where?
A practical map of mandatory obligations, contractual requirements, and voluntary guidance across OT verticals, including NERC CIP, ISA/IEC 62443, water, transport, nuclear, and regulated manufacturing.
OT strategyThe Business Case for OT Cybersecurity — Safety, Downtime, and Value
Explain OT security investment in terms of physical consequences, expected downtime, product loss, and lifecycle cost—with worked calculations and clear limits on what ROI can establish.