IT/OT convergence in manufacturing: Barriers, risks, and what leaders need to know
IT/OT convergence is transforming manufacturing, connecting enterprise systems with industrial operations to drive efficiency and innovation. But integration also introduces new risks. This blog explores the most common IT/OT convergence challenges, from legacy systems and shared accounts to vendor access and data visibility gaps.
Manufacturers have long treated information technology (IT) and operational technology (OT) as separate worlds.
IT manages enterprise systems: ERP platforms, cloud applications, analytics tools, and corporate networks.
OT controls industrial environments: programmable logic controllers (PLCs), robotics, sensors, and production machinery.
That separation once made sense. But now it no longer reflects reality.
Modern manufacturing environments depend on real-time IT/OT convergence. Production data flows into analytics platforms. Maintenance teams use mobile devices to interact with equipment. Vendors remotely access industrial systems. Cloud dashboards monitor plant performance across multiple facilities.
The promise of IT/OT convergence is powerful. But so are the challenges.
According to research, some of the most common convergence challenges include:
- 46% cite security concerns as the #1 issue
- Legacy OT assets are 15+ years old in ~50% of manufacturers, complicating secure integration with IT systems
- Only 30% of manufacturers can deliver real-time data to frontline workers, highlighting integration gaps
- Cybersecurity maturity is low: only 15% of manufacturers have robust practices
For manufacturing leaders evaluating identity and access management providers, understanding the barriers to IT/OT convergence is essential to building a secure, identity-first modernization strategy.
What IT/OT convergence really means
IT/OT convergence in manufacturing refers to the integration of enterprise IT systems with operational technology environments to improve visibility, efficiency, and data-driven decision-making.
In practical terms, this means:
- Production data feeding into enterprise analytics platforms
- Secure remote access to industrial control systems
- Shared identity systems across corporate and plant networks
- Cloud-based monitoring of OT assets
The benefits are clear. Better operational insight. Predictive maintenance. Reduced downtime. More agile supply chains.
But convergence also expands the attack surface.
If access management is inconsistent across environments, IT/OT convergence risks quickly emerge.
The most common IT/OT convergence challenges
1. Cultural and governance misalignment
IT and OT teams often operate under different leadership structures with different risk tolerances.
IT security teams may push for strict multifactor authentication and centralized identity management. OT teams may resist changes that introduce perceived workflow friction or system instability.
Without a unified IT/OT convergence strategy, security controls become fragmented.
2. Legacy OT systems not built for modern identity models
Many industrial systems were designed before today’s cybersecurity threats became widespread. They may not support modern authentication standards or centralized access policies.
This creates inconsistencies in how users are authenticated and authorized across IT and OT systems.
The result is uneven, fragmented protection.
3. Shared accounts and limited visibility
In many manufacturing environments, shared workstations and generic credentials remain common in OT settings. This reduces accountability and complicates auditing.
When IT/OT data is unified for analytics, but identity controls remain siloed, organizations struggle to answer critical questions:
Who accessed this system?
When did they access it?
What actions did they take?
This lack of visibility increases cyber vulnerability.
4. Expanding third-party access
IT/OT manufacturing environments rely heavily on vendors for maintenance and remote diagnostics.
As IT and OT networks converge, vendor access may unintentionally expand beyond its original scope. Without clear segmentation and session monitoring, third-party access can introduce systemic risk. Remote access can create a particularly vulnerable risk vector, as VPNs often provide broad, privileged access when not needed. Attackers can then use this vulnerability to gain direct access to IT and OT environments.
5. Protecting data across hybrid environments
IT/OT protecting data requires consistent identity governance across cloud platforms, on-prem systems, and industrial equipment. When policies differ between environments, attackers exploit the weakest link.
The security risk of convergence without identity control
IT/OT convergence benefits are real. However, convergence without coordinated access management increases exposure.
If enterprise credentials can be reused in OT systems without proper controls, a phishing attack against corporate IT may serve as a gateway into production environments.
If OT systems lack centralized identity enforcement, monitoring becomes inconsistent.
If remote access is not governed by least-privilege principles, attackers gain greater mobility once inside.
Manufacturers do not need less convergence. They need smarter convergence.
And that begins with identity.
Building an effective IT/OT convergence strategy
A secure IT/OT convergence strategy must treat identity as foundational infrastructure, not an afterthought.
Unify identity across IT and OT
Access controls should extend consistently across enterprise and industrial systems. That includes enforcing role-based access, multifactor authentication where appropriate, and centralized policy management.
Consistency reduces risk and simplifies compliance.
Protect shared and critical devices
Manufacturing environments depend on shared workstations and mobile devices. Convergence should not mean shared credentials.
Personalized access sessions on shared endpoints maintain accountability while supporting fast-paced workflows.
Secure and monitor vendor access
As IT/OT convergence expands connectivity, vendor access must be tightly governed.
Time-bound permissions, session recording, and credential vaulting reduce risk without disrupting operational support.
Gain visibility into IT/OT data access
Convergence increases the volume of IT/OT data. Organizations need centralized analytics that provide insight into access behavior across both domains.
Visibility enables proactive risk detection and supports regulatory requirements.
The business case for secure convergence
Manufacturers pursue IT/OT convergence to improve operational efficiency, reduce downtime, and drive innovation.
However, unmanaged convergence can undermine those goals.
Cyber incidents that originate in IT can disrupt OT systems. Production downtime affects revenue. Data breaches damage brand reputation. Regulatory penalties increase financial exposure.
Conversely, organizations that align identity governance with convergence initiatives strengthen resilience.
They reduce downtime risk.
They improve compliance readiness.
They enable secure digital transformation.
IT/OT convergence should enhance operational performance, not compromise it.
Why identity-driven access is critical in IT/OT manufacturing
As manufacturing environments continue to integrate enterprise systems and industrial operations, the question is no longer whether convergence will occur. It already has.
The real question is whether access controls are evolving at the same pace.
Imprivata delivers simple and secure access management solutions for mission-critical industries to ensure every second of crucial work is both frictionless and secure. The Imprivata platform of interoperable access management and privileged access security solutions enables organizations to fully manage and secure all enterprise and third-party identities to facilitate seamless access, protect against security threats, and reduce the total cost of ownership.
For manufacturers navigating IT/OT convergence challenges, identity-driven access management provides the consistency, visibility, and control required to protect both data and industrial systems.
Convergence without an access management strategy increases risk. Convergence with strong access controls strengthens resilience.
The difference is foundational.