Build, Extend or Manage? Picking Your OT SOC Model

Some plants build a dedicated OT security team from the ground up. Others extend the existing IT SOC to cover operational technology. A growing number of hand OT monitoring and response to a managed security operations partner. 

Each path solves a different problem. Each also creates a different set of risks if it’s chosen for the wrong reason. 

The U.S. Cybersecurity and Infrastructure Security Agency have told critical infrastructure operators to plan on the assumption that OT systems will be targeted, not just that they might be. For manufacturers, that assumption makes the operating model a production-continuity decision, not only a security department decision. 

Here we compare the three operating model manufacturers use to run OT security operations, where each one breaks down, and how to decide which one fits a given plant.

What Changes When OT Security Becomes an Operations Question?

An OT security operations model determines who watches production systems, who responds when something looks wrong, and how fast that response reaches the plant floor. 

Get the model wrong and the consequences show up during an incident, not before one. A team without OT context can misread a legitimate engineering change as an attack or miss a real one because it looks like normal plant activity. 

Get the model right, and detection, investigation, and response all move at a pace that matches how manufacturing operates.

Why Does This Decision Belong to Manufacturing Leadership?

The choice is often treated as an IT staffing decision. It behaves more like a capacity-planning decision. 

A plant running three shifts needs coverage across all three. A multi-site manufacturer needs consistency across sites with different equipment, different vendors, and different levels of OT maturity. A single-site operation with a stable process has different needs than a manufacturer expanding into new facilities. 

The right model depends on production reality, not on where the org chart happens to draw the security reporting line. 

Plant leadership, security leadership, and finance need to weigh in together, because each carries a different piece of the trade-off. Security understands the coverage gap. Plant leadership understands what delayed response costs on the floor. Finance understands whether a headcount or a service contract fits the budget structure the business actually runs on. 

What Do Build, Extend and Manage Actually Mean?

The three models sit on a spectrum from full internal ownership to full external delegation.

None of the three are superior. Each trades speed, control, and cost differently. 

What Does It Take to Build an OT Security Operations Function In-House?

Building means hiring analysts who understand both cybersecurity and industrial control systems, then giving them the tools, playbooks, and plant access to do the job. 

Done well, this model produces the deepest possible understanding of a specific plant. An in-house team learns about the equipment, the maintenance schedule, and the difference between a routine changeover and a genuine anomaly faster than any outside team could.

Why Is Building In-House Difficult to Sustain?

The obstacle is rarely willingness. It’s available. 

Fewer than half of industrial organizations currently maintain a dedicated OT or ICS security team, according to recent industry workforce data. Analysts who understand both PLCs and packet captures remain scarce, and competition for that talent isn’t limited to manufacturing. 

Buildings also take time most manufacturers don’t have. Hiring, training, and tool deployment for a functioning OT security operations capability typically runs well beyond a single budget cycle. The plant that starts building today isn’t covered today. 

Cost is the third constraint. A build model carries ongoing headcount, tooling, and training costs whether an incident ever occurs, and those costs scale with every additional site.

Can You Extend Your Existing IT SOC to Cover OT?

Extending is the most common starting point because the infrastructure already exists. A SOC that already monitors IT can absorb OT alerts, add OT-aware tooling, and train existing analysts on industrial protocols. 

This model is faster to stand up than building from scratch and keeps security operations under one roof, which can simplify governance and reporting.

Where Does Extending an IT SOC Fall Short?

IT and OT security operations don’t weigh the same signal the same way. 

An IT SOC is trained to contain first and ask questions later. In a production environment, isolating a system can stop a line, and an analyst without plant context has no way to know that in the moment. 

Extending also tends to underestimate how much OT-specific tuning an existing SOC actually needs. Generic detection rules built for enterprise IT traffic produce noise against industrial protocols, and tuning that noise out requires OT expertise most IT SOC analysts were never trained in. 

The model works best when a manufacturer has a mature IT SOC already, a single site or a small number of similar sites, and enough internal appetite to invest in real OT training rather than treating it as an add-on to existing IT responsibilities.

What Does a Managed OT Security Operations Model Provide?

A managed OT security operations model for hands monitoring, detection, and response to a partner that specializes in industrial environments. 

The partner brings 24×7 coverage, OT-specific detection content, and analysts who already understand industrial protocols, without the manufacturer carrying the hiring or training burden directly. 

What Should Manufacturers Expect from a Managed Model?

Speed to value is the clearest advantage. A managed model can bring OT-aware monitoring online in weeks rather than the year or more a build effort often requires. 

Coverage is the second advantage. A managed partner can staff nights, weekends, and holidays consistently, which is difficult for an internal team at any but the largest manufacturers. 

The trade-off is proximity. A managed partner doesn’t carry the same day-to-day familiarity with a specific line, shift pattern, or maintenance calendar that an internal team develops over time. That gap has to be closed deliberately, through onboarding, documented playbooks, and a clear escalation path back to the plant. 

Extend vs Manage: Where Does Each Model Fit?

For most manufacturers, the real decision isn’t built versus everything else. It’s extended versus manage, since build alone rarely covers a full OT environment without one of the other two models layered on top.

Neither column is the correct answer. A single-plant manufacturer with a well-resourced IT SOC and patient leadership may extend successfully. A multi-site manufacturer under pressure to close a coverage gap quickly is usually better served by a managed model, at least as a starting point. 

What Recent Manufacturing Incidents Reveal About Operating Model Gaps

In July 2026, Coca-Cola disclosed in a filing with the U.S. Securities and Exchange Commission that its subsidiary fair life had suffered a ransomware event involving unauthorized third-party access to systems connected to production. U.S. manufacturing operations were suspended while the company activated its incident response plan and brought in external advisors and cybersecurity specialists. (Source: Coca-Cola SEC 8-K filing) 

The filing itself said the full scope of the incident wasn’t yet known; days after production had already stopped. 

That detail matters here. Bringing in outside specialists after an incident begins is a form of managed response, just an unplanned one, negotiated under pressure instead of built into the operating model in advance. 

An operating model chosen ahead of time comes with defined roles, tested escalation paths, and analysts who already understand the environment. A model assembled mid-incident comes with none of that, regardless of how capable the specialists eventually brought in turn out to be. 

Manufacturing accounted for the largest share of industrial ransomware incidents recorded so far this year, more than any other sector tracked. The operating model question isn’t whether a manufacturer will face a serious incident. It’s whether the response capability already exists when the incident starts, or gets assembled after production has already stopped.

What Should Manufacturers Evaluate Before Choosing a Model?

A few questions consistently separate manufacturers who choose well from those who choose by default. 

How many sites need coverage, and how similar are their environments? A single, consistent plant environment tolerates extending an IT SOC better than a portfolio of dissimilar sites does. 

What does current OT security talent access actually look like?

An honest answer here often decides the build question before any other factor is weighed. 

How fast does detection need to reach a decision-maker who understands the process? Coverage hours matter less than whether the right person can act on an alert quickly. 

What already exists that can be extended, and what would have to be built from nothing? Few manufacturers start from zero. Most already have IT SOC capability, some OT visibility tooling, or existing vendor relationships that shape which model is realistic.

How Prudent Supports Manufacturing OT Security Operations

Prudent helps manufacturers evaluate their current OT security operations capability against production reality, not against a generic maturity model, and map that evaluation to a build, extend, or managed approach that fits the plant portfolio. 

For many manufacturers, the answer isn’t a single model but a blend: extending IT SOC capability where it already exists, layering managed coverage where talent or hours fall short, and reserving in-house build effort for the plant-specific context no outside partner can fully replicate. 

That blend only works when it’s chosen deliberately, before an incident forces the decision. 

Prudent’s OT SOC architecture, SOC-as-a-Service, and OT MDR/MSS offerings span all three models, so the recommendation isn’t built around a single one of them. The goal is a coverage plan a manufacturer can defend on cost, speed, and production risk, not just a security posture that looks complete on paper.

Map Your Path to the Right OT Security Operations Model

Work through the same evaluation criteria manufacturers use to compare build, extend, and manage OT security operations models against their own plant environment. 

Get the Manufacturing OT Security Operations Checklist