Choosing an OT platform without vendor bias — what matters

Claroty, Nozomi, Dragos, Armis, Forescout — on the glossy slides, the leading OT security platforms resemble each other to the point of confusion. Each promises complete visibility, each shows the same dashboards. The real question is not which is the "best", but which fits your plant.

Choosing an OT security platform is a decision with a long commitment. These tools are integrated deeply into the production environment, they run for years, and switching later is expensive and laborious. It's all the more astonishing how often such decisions are made on the basis of demos, market analyses and a gut feeling about which vendor is currently loudest.

I've compared the leading platforms in detail — not from data sheets, but from actually assessing them against one another. The most important insight: there is no universally best platform. There is only the one that best fits a particular architecture, a particular risk profile and a particular budget.

Why market analyses are only half the truth

The big analyst quadrants and comparison studies are a useful starting point, but they answer the wrong question. They rank vendors on abstract axes like "completeness of vision" or "ability to execute" — averaged across all industries and company sizes. What's optimal for a global automotive corporation with thirty plants can be completely oversized for a mid-sized chemical operation with a single plant.

The criteria that count in practice

Instead of looking at the overall ranking, it's worth examining the dimensions that make the difference in the concrete case:

Architecture fit

How is the platform integrated in the first place? Does it rely on passive sensors at the SPAN port, on active queries, on agents? In an environment with sensitive legacy systems, a purely passive approach is often the only acceptable option. Some platforms are fundamentally better positioned here than others.

Depth of OT protocol support

Every platform advertises "broad protocol coverage". What's decisive, however, is whether exactly the protocols and controller types running in your plant are really deeply supported — not just detected, but understood down to the function level.

Integration into the existing landscape

An OT platform never stands alone. It must fit into the existing SIEM, into existing SOC processes and into the IT security organization. A platform that delivers excellent OT visibility but can't be cleanly connected to central monitoring creates a new silo instead of dissolving one.

Operability within your own team

The most powerful platform is of little use if your own team can't operate it. How steep is the learning curve? How much staff does ongoing operation tie up? Especially in mid-sized companies, this is often the decisive criterion — and the one that appears on no glossy slide.

How an honest selection works

A reliable platform decision follows no sales logic but an evaluation logic. It begins with the requirements of the concrete environment, translates them into weighted criteria and compares the candidates against them in a structured way. The result is not a blanket recommendation but a transparent shortlist — ideally with two candidates for a proof of concept, in which both must prove themselves on the real plant.

This is exactly where the value of an independent view lies: someone who knows all the platforms but is tied to none can answer the question the operator really has — not "which is the best on the market", but "which is the right one for us".