OT Managed Services: Engineering Governance

OT Managed Services may share a foundation with IT, but the physical risks of critical infrastructure call for a fundamentally different approach. Parasyn provides high-governance OT management built for the brownfield dilemma, keeping legacy assets safe, secure, and ready to evolve through validated engineering protocols, rather than the break-fix mentality that defines most traditional support.

Feature	Standard Support Contract	Parasyn OT Managed Services
Primary Focus	Reactive uptime (break/fix)	Lifecycle governance and continuity
Change Protocol	Help desk ticket	Engineering Management of Change (MoC)
Security Focus	Periodic patching and antivirus	Active security posture and compliance
Legacy Assets	Rip and replace bias	Brownfield dilemma mitigation
Accountability	Best effort, standard SLA	High-governance SLA and engineering audit

We treat your OT environment as a living asset. The MSA manages its continuous evolution to stop technical debt from quietly compromising safety.

• Controlled modernisation: phased hardware and software refreshes engineered to eliminate process downtime.
• Obsolescence management: proactive roadmapping of end-of-life PLCs, HMIs, and networking gear, with validated migration paths ready before they're needed.

Unmanaged change is the leading cause of OT downtime. We apply rigorous Management of Change (MoC) protocols to every engineering adjustment, however small.

• Configuration governance: centralised version control and auditing for all PLC logic, SCADA telemetry, and industrial network settings.
• Disaster readiness: automated, verified backups of every industrial configuration, so returning to a known-good state takes minutes, not days.

Security in OT is a functional safety requirement, not an IT afterthought. We align operations with the IEC 62443 framework and Australia's SOCI Act requirements.

• Vulnerability governance: we assess vulnerabilities against process impact. If a patch risks process stability, we engineer compensatory controls (zones and conduits) to shield the asset instead.
• Compliance evidence: continuous documentation and auditing to meet high-governance regulatory mandates across water, transport, and energy.

While the MSA focuses on strategy and governance, we provide a robust framework for daily operational needs too, the safety net that means your team is never left without expert engineering support.

High-performance Service Level Agreements: a tiered response model that guarantees accountability for every request, from P1 emergency restorations to P4 standard engineering requests, measured by mean time to restore, the speed of process recovery, not just the speed of the initial response, backed by an OT-specialist service desk who understand industrial protocols and your site's safety standards.

Core support activities include industrial break-fix (rapid troubleshooting of SCADA, PLC, and networking faults), request fulfilment (standardised moves, adds, and changes), and site knowledge management, maintaining the site-specific engineering standards that keep every intervention consistent with the original design philosophy.