For decades, information technology (IT) and operations technology (OT) lived in separate worlds. IT ran the business—email, enterprise apps, user access, and data. OT ran the operation—industrial control systems, SCADA systems, programmable logic controllers (PLCs), and the technologies that keep factories producing, utilities delivering power, and transportation systems moving.
That separation is fading fast. The modern enterprise is connecting operational systems to cloud platforms, analytics pipelines, remote workforces, and AI-driven automation. The result is an accelerating trend: IT/OT convergence, where digital business systems and physical operational systems share networks, data, and applications.
“IT/OT convergence is happening because it creates faster, smarter, and more scalable operations. But it also creates a new kind of risk surface—one where web apps, APIs, identities, and cloud connectivity can directly impact physical systems.”
This shift delivers real operational benefits, but it also expands risk in ways organizations weren't designed to handle. As OT becomes more connected, it inherits IT's threat landscape—and that means IT security becomes foundational to resilience, safety, and uptime.
What's driving IT/OT convergence
Several forces are pushing organizations to integrate operational environments with IT systems. Digital transformation is pulling OT into the same modernization orbit as enterprise IT, especially as operational data becomes strategically valuable. Distributed infrastructure means apps, APIs, users, and data are now spread across hybrid and multicloud environments—and OT teams need secure remote access for maintenance, monitoring, and vendor support across more locations than ever before.
Organizations also want operational insights in real time: predictive maintenance, anomaly detection, demand forecasting, and optimization. Those use cases require OT telemetry to flow into IT data platforms, often through APIs. And as environments grow, manual processes and siloed tooling reduce efficiency and increase downtime risk, making automation increasingly essential.
The risk when OT connects to IT
Historically, OT relied on isolation, proprietary protocols, and air gaps. But as OT connects to IT networks—and by extension, to the internet and cloud services—attackers gain more pathways into systems that were never designed for modern adversaries.
The problem is compounded by the nature of today's threats. Sophisticated attacks driven by bots and AI, along with threats like ransomware-as-a-service, are making traditional perimeter security obsolete. When OT environments become reachable through shared identity systems, remote access paths, web apps, and APIs, the stakes rise: attacks can disrupt physical operations, not just digital workflows.
This is where many organizations face a critical gap. They rely on point products—each designed to address a specific threat or use case—that cannot deliver consistent, integrated security and delivery across a converged environment. Managing these disparate tools is resource intensive, creates security gaps, and adds complexity that neither IT nor OT teams can easily absorb.
How F5 ADSP helps organizations converge securely
Rather than layering more point products onto an already complex environment, F5 Application Delivery and Security Platform (ADSP) converges application and API security with high-performance delivery in a single platform—meeting organizations where they are and how they work, whether that's on-premises, at the edge, or across hybrid multicloud infrastructure.
In the context of IT/OT convergence, that matters in several important ways:
- Zero trust access enforcement: As OT becomes reachable through IT networks, the principle of zero trust ("never trust, always verify") becomes essential. F5 ADSP supports zero trust architectures with strong identity and per-request authentication, least-privileged access, and continuous monitoring and dynamic policy enforcement—so an IT compromise doesn't become an operational outage.
- Web app and API protection: OT data increasingly moves through apps and APIs, not just industrial protocols. F5 ADSP provides an industry-leading web application and API protection (WAAP) capability—including WAF, DDoS mitigation, bot defense, and API security—delivered consistently across environments. This is critical because many organizations don't have full visibility into all the APIs they run, creating blind spots and unmanaged risk.
- Encrypted traffic inspection: Encrypted SSL/TLS traffic is now the majority of application traffic, and attackers hide inside encryption too. F5 ADSP includes high-performance decryption and re-encryption capabilities that enable concealed threat detection and help defend against hidden attacks like ransomware. Importantly, the platform is also designed to support Post-Quantum Cryptography (PQC) algorithms—a growing requirement for critical infrastructure.
- Consistent security across legacy and modern environments: One of the unique challenges of IT/OT convergence is that operational environments often run legacy systems alongside modern cloud-native infrastructure. F5 ADSP is built to deliver consistent security and delivery for every app and API, from legacy deployments to containerized environments like Kubernetes—without forcing organizations to replace what's already working.
- Automation and visibility: In converged environments, manual processes introduce latency and inconsistency. F5 ADSP extends policy, telemetry, and automation across all solutions, so IT and OT teams gain actionable visibility and can reduce operational toil—improving incident response and reducing downtime risk.
Convergence is inevitable—secure convergence is a choice
IT/OT convergence is happening because it creates faster, smarter, and more scalable operations. But it also creates a new kind of risk surface—one where web apps, APIs, identities, and cloud connectivity can directly impact physical systems.
The problem most organizations face is not a lack of awareness. It's fragmentation: too many point products, too little consistency, and too much complexity for teams already managing critical infrastructure. Relying on siloed tools that weren't designed to work together leaves gaps that sophisticated attackers are increasingly willing to exploit.
The benefit of a platform approach is consolidation without compromise. F5 ADSP removes the complexity and cost of managing disparate security and delivery tools by bringing them together in a single, converged platform. Organizations get consistent, comprehensive protection across IT and OT environments—enforcing zero trust, protecting apps and APIs, inspecting encrypted traffic, and preserving uptime and compliance across hybrid environments—all without overhauling how they work.
Security can't be a bolt-on in a converged environment. It has to be foundational. Learn more about how F5 can secure your IT/OT infrastructure and protect it from current and future threats.
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