Understanding Operational Technology in Industrial Environments

June 4, 2025

The term "Operational Technology" has become increasingly prevalent in industrial discussions. But what exactly does it mean for your business operations?

What is Operational Technology?

Operational Technology (OT) encompasses the hardware and software that directly monitors and controls physical equipment, assets, and processes. While Information Technology (IT) manages data and business processes, OT interfaces directly with the physical world.

Consider the systems that control assembly lines, monitor oil refineries, or manage power distribution networks. These OT systems work behind the scenes, ensuring critical infrastructure functions reliably.

At its core, OT includes programmable logic controllers (PLCs), distributed control systems (DCS), supervisory control and data acquisition (SCADA) systems, human-machine interfaces (HMIs), and various sensors and actuators.

Together, these technologies form the backbone of operations across manufacturing, utilities, transportation, and oil and gas sectors.

The Shifting Landscape of OT

The world of operational technology has undergone remarkable transformation. What once consisted primarily of mechanical gauges and manual controls has evolved into sophisticated digital systems.

Modern industrial environments now witness increasing convergence between OT and IT domains.

This integration brings powerful capabilities but introduces new complexities.  

Today's OT infrastructure frequently incorporates connectivity features previously confined to IT—remote access, data analytics, and comprehensive network integration.

The evolution has spawned the Industrial Internet of Things (IIoT), where interconnected devices deliver unprecedented operational visibility. With these advancements come substantial challenges requiring specialized solutions.

Unique Challenges in OT Environments

OT systems operate under constraints rarely encountered in conventional business settings; their requirements remain stringent and consequential.

Confronting Harsh Physical Conditions

Industrial settings routinely expose equipment to extreme temperatures, moisture, dust, and chemical contaminants. Standard commercial hardware simply fails in these environments.  

When installed on offshore platforms, adjacent to heavy machinery, or within food processing facilities, computing equipment must withstand conditions that rapidly destroy conventional technology.

Meeting Uncompromising Reliability Requirements

Production stops when OT systems fail. Most industrial operations cannot tolerate even minimal downtime, necessitating computing solutions engineered for continuous operation.  

A single hour of manufacturing line downtime can cost tens of thousands in lost production. Critical infrastructure like power generation demands systems that function without interruption.

Supporting Extended Lifecycles

Industrial systems typically remain in service for decades rather than years. This longevity demands support and compatibility well beyond what consumer technology provides. While commercial equipment follows a 3-5 year replacement cycle, industrial systems must function reliably for 10-15 years or longer, often in settings where replacement proves difficult and expensive.

Addressing Specialized Security Concerns

As connectivity grows within OT environments, these systems face unique cybersecurity threats that potentially impact physical operations and safety.  

Unlike IT breaches that compromise data, OT security incidents can disable critical infrastructure or create hazardous physical conditions. This reality necessitates security approaches that address both digital and physical consequences.

Real-World OT Applications

Operational technology underpins modern industrial operations across virtually every sector involving physical processes or machinery.

Manufacturing: Precise Controls

Manufacturing facilities depend on OT to govern production lines, manage quality assurance, and coordinate equipment throughout the production floor.  

HMIs give operators visibility and control over machinery, while automated systems maintain precise coordination between production stages. These technologies must withstand constant vibration, airborne particulates, and temperature variations while operating continuously throughout production.

Oil and Gas: Critical Safety Systems

The oil and gas industry relies on OT for wellhead monitoring, refinery process control, and pipeline management. These environments present some of the most demanding conditions: potentially explosive atmospheres, temperature extremes, and remote locations with minimal infrastructure.  

Equipment must meet stringent safety certifications while delivering reliable performance with minimal maintenance requirements.

Food and Beverage: Sanitary Production Controls

Food and beverage facilities create distinct challenges for operational technology. Equipment faces frequent washdowns with caustic cleaning agents while maintaining strict hygienic standards.  

Control Systems

Control systems manage mixing, cooking, packaging, and labeling processes in environments characterized by high humidity, temperature fluctuations, and exposure to ingredients that compromise standard electronics.

Marine Operations: Environmental Resilience

Maritime environments expose OT systems to relentless humidity, corrosive salt spray, and constant motion. Navigation systems, engine management controls, and monitoring equipment must function reliably despite these challenging conditions.  

Displays typically require sunlight readability during daylight hours while offering adjustable brightness for nighttime operations.

Transportation: Essential Reliability

Transportation infrastructure increasingly depends on OT for traffic management and logistics optimization.  

Environmental Durability

Outdoor installations such as weigh stations, toll systems, and information displays function year-round in all weather conditions. These systems combine physical durability with sophisticated features, including camera integration, payment processing, and real-time communications.

VarTech’s Products: Purpose-Built for OT Challenges

Addressing these challenges demands specialized equipment engineered specifically for industrial environments. VarTech Systems has developed computers, monitors, and HMIs that withstand the harshest conditions while delivering consistent performance for over 35 years.  

Our product lines address the full spectrum of OT requirements:

DiamondVue Computers and Monitors: Industrial Versatility

A pair of an 18.5" DiamondVue industrial computer and a 15.6" monitor, built to meet NEMA 4X and IP66 protection
18.5" DiamondVue computer (left) and 15.6" DiamondVue Monitor (right)

DiamondVue stands as our most widely deployed product line, offering dependable performance across numerous industrial applications with robust protection against environmental intrusion.  

Display Size Options

Available in seventeen display sizes ranging from 6.5" to 43", these versatile computers and monitors create the critical interface between operators and machinery. Built to NEMA 4/4X and IP65/66 protection standards, DiamondVue units can withstand temperatures from -40°C to 70°C.

ToughStation Computers, Monitors, and Workstations: Environmental Sealing

A pair of ToughStation HMI workstations shown with ergonomic keyboard and panel enclosure options
24" ToughStation Ergonomic Workstation (left) and 24" ToughStation Panel Workstation (right)

ToughStation computers, monitors, and workstations feature fully sealed enclosures for installations requiring frequent washdown or chemical sanitation. They excel in food processing and life sciences applications where cleanliness and reliability remain non-negotiable.  

Washdown-Ready Enclosures

Their stainless-steel construction resists corrosion while maintaining protection against moisture and particulate intrusion, making these units ideal for washdown and GMP environments demanding frequent cleaning.

All-Weather Computers and Monitors: NEMA 6/IP67 Elemental Protection

A pair of 15.6" All-Weather computers and monitors by VarTech Systems, built weatherproof with NEMA 6 and IP67 protection
15.6" All-Weather computer (left) and 15.6" All-Weather monitor (right)

Engineered for marine, military, and outdoor deployment, All-Weather computers and monitors withstand precipitation, extreme temperatures, and harsh elements. They monitor offshore operations and outdoor industrial processes where environmental exposure remains constant.  

High-bright displays delivering up to 1800 nits of brightness ensure visibility even under direct sunlight.

Hazardous Area HMIs: Certified for Safety

VarTech's DiamondVue C1D2-certified hazardous area computers and monitors shown with 10.4" and 24" display options
10.4" (left) and 24" (right) DiamondVue C1D2-certified computers or monitors.

Our C1D2-certified and purge-protected computers, monitors, and workstations ensure secure operation where flammable gases, vapors, or combustible dust may be present.  

Certified Purge Systems

Certified Type-X and Type-Z purge systems enable computing solutions to function safely in environments where standard electronics present ignition hazards. These specialized technologies maintain critical monitoring and control capabilities in facilities with stringent safety requirements.

Small Form Factor Computers: Space-Efficient Processing

A pair of ToughCube IP67 industrial small form factor computers in black and light gray powder coated finishes
ToughCube small form factor computers

Our PowerCube, ToughCube, and SuperCube industrial small form factor PCs deliver substantial computing capability in compact footprints, ideal for machinery integration or space-constrained deployments.  

Robust processing power with up to 64 GB RAM and 8 TB storage capacity in ruggedized enclosures make them ideal for industrial environments.

Edge AI Computing: Advanced Processing

VarTech's Bolt (Ai) industrial edge AI computer with and without an integrated display, built weatherproof for outdoor use
Bolt (Ai) computer, shown with and without optional 11.6" service display

The Bolt (Ai) combines sophisticated processing capabilities with a weatherproof IP67 design, bringing artificial intelligence capabilities to outdoor environments.  

Fully Sealed and Heat-Resistant

Offering up to 128 GB RAM and implementing our proprietary cooling architecture, it enables complex data processing at the network edge where conventional computing hardware would quickly fail.

The Future of OT: Edge Computing and AI

Operational technology continues evolving, shaped by two significant trends transforming industrial computing requirements.

The Rise of Edge Computing

Edge computing—processing data near its generation point rather than transmitting everything to centralized servers—reduces latency and bandwidth requirements while improving reliability. This approach proves especially valuable in OT environments requiring real-time processing.  

On-site data analysis enables immediate decision-making without delays from round-trip communications with distant data centers.

AI Integration in Industrial Environments

Artificial intelligence has been transforming industrial operations, enabling predictive maintenance, improved quality control, and faster process optimization.

Implementing AI in harsh industrial settings presents significant challenges; as manufacturing and process industries adopt AI for efficiency and quality improvements, the supporting infrastructure must match industrial durability requirements.

VarTech's Bolt (Ai) addresses these emerging needs through advanced AI processing capabilities in a fully sealed IP67 design. With 128 GB RAM capacity and a proprietary cooling architecture that performs in elevated temperatures, it delivers edge AI capabilities to demanding environments without compromising reliability or operational lifespan.

The VarTech Difference

What distinguishes VarTech in the OT landscape extends beyond our product portfolio—it's our approach to customer solutions. Every system we deliver meets the exact specifications and requirements of our customers' applications.

Our Project Managers possess over 15 years of average tenure and deep experience across manufacturing, automation, defense, energy, food processing, and marine applications.

They collaborate with our in-house engineering team to customize industrial computers, monitors, and workstations that maximize performance in challenging environments.

When Standard Won't Do

The operational technology landscape presents challenges that standard commercial equipment cannot address. From extreme environmental conditions to specialized safety requirements, OT demands purpose-built solutions engineered for reliability, longevity, and performance.

VarTech Systems has built its reputation delivering these specialized systems. As boundaries between OT and IT blur and edge computing and AI transform industrial operations, we remain committed to providing the foundation upon which modern OT infrastructure depends.

For organizations navigating the evolving OT landscape, selecting the right hardware partner becomes critical. With decades of experience engineering solutions for the world's most demanding environments, VarTech stands ready to address your operational challenges.

Contact us today to learn how our industrial and rugged computing solutions can support your OT infrastructure.  

Contact VarTech Systems Inc.

At VarTech Systems, our Project Managers—with an average of 15+ years of industry experience—are ready to customize a computer, monitor, or HMI workstation solution to meet your needs. Drawing from extensive backgrounds in manufacturing, military, oil and gas, and marine applications, they provide expert guidance throughout your project journey.

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Based in Clemmons, North Carolina, VarTech Systems Inc. engineers and builds custom industrial and rugged computers, monitors, and HMIs.