Operational Technology
Practice 03

When the environment no longer fits the business, rebuild it properly.

Infrastructure modernisation covers the engineering work that happens when an environment has reached the end of its useful life. Network rebuilds, cloud migration, identity consolidation, on-premises retirement, and operational technology integration.

Modernisation is not a forklift upgrade. The aim is a documented environment that fits how the business actually operates today and is honest about how it will operate in three years. The engineering work is the easy part. The harder part is the documentation, the handover, and the operating model that comes after the cutover.

What we modernise

Six engineering disciplines, run against one documentation standard.

Every modernisation project produces the same artefacts: high-level design, low-level design, configuration baseline, runbook, and a handover document. The client owns all of them.

01

Network design and rebuild

Accredited Cisco, Aruba, and UniFi engineering. Design is matched to the client's operating reality, not to the engineer's preferred dashboard. High-level and low-level design documents handed over to the client at project close.

Multi-vendor by design. The right platform is chosen against the business, not the engineer's comfort zone.

02

Cloud migration

Microsoft 365, Azure, and AWS migration delivered against documented runbooks. On-premises file shares, line-of-business applications, and legacy identity sources retired in a controlled sequence, not a forklift event.

Identity, data classification, and security posture redesigned as part of the migration, not bolted on afterwards.

03

Identity consolidation

Active Directory to Entra ID. Multi-tenant environments rationalised. Conditional access, privileged identity management, and identity governance designed against a documented baseline that survives the project.

Most modernisation projects fail at the identity layer. We start there for a reason.

04

On-premises retirement

Server room exits. File server consolidation. Legacy infrastructure decommissioned with documented data classification and a clear archival position. The cabinet stays empty when we leave.

Done against an audit trail so the position is defensible to insurers, regulators, and successors.

05

Operational technology integration

Industrial control, SCADA, building management, and physical security platforms integrated into the corporate network under a documented segmentation model. CCTV, access control, and OT segregated from corporate identity.

Most OT incidents we respond to start with a flat network. The remediation is structural, not a tool purchase.

06

Wi-Fi and access infrastructure

Survey-led wireless design across Cisco Meraki, Aruba CX, and UniFi. Wired access designed with PoE budget, segmentation, and lifecycle in mind. Documented heat maps and configuration baselines.

Wi-Fi designs that survive a building extension because the underlying capacity was planned for it.

Network infrastructure cabinet showing structured cabling and Meraki MX
In the field

Independent secondary school in regional Queensland, 480 students across two campuses.

Inherited environment built incrementally over twelve years. Three generations of switching gear, two wireless platforms, a domain controller running on hardware out of vendor support, and a backup target on a SAN nobody had touched in four years.

Six-month modernisation programme. New Cisco Meraki MX, MS, and MR across both campuses. Identity migrated from on-premises Active Directory to Entra ID with hybrid join during transition. File services migrated to SharePoint and OneDrive against a documented retention model. Old domain controller retired. The server room at the secondary campus was decommissioned to a network closet.

Project documentation handed to the school's IT coordinator at close. Quarterly reviews now run against the design, not against incidents. Three years on, the environment still matches the documentation, because the operating model was designed alongside the build.

Outcome

Annual run rate reduced 22% versus the prior environment, with materially better wireless coverage and a defensible posture for the school's annual external audit.

Why it matters commercially

Modernisation is the difference between paying for an environment and paying for what it does.

An environment that nobody can describe is an environment nobody really owns. The first job of modernisation is to make the environment describable. The cutover is secondary.

Most Australian businesses we modernise have spent the last decade paying for incremental fixes against an architecture that was never updated to match how they grew. The annual run rate looks reasonable in any single year and unjustifiable when viewed across five.

The commercial value of modernisation is in the operating model that comes after, not in the install. A documented environment can be operated by a different provider tomorrow if it has to be. A documented environment supports a sale, a merger, an insurance renewal, or a procurement assessment without weeks of preparation. The same documentation also makes the next modernisation cycle cheaper.

We price modernisation projects against a documented scope, a documented schedule of rates, and a fixed change control process. The commercial position is on the table at project start, and it survives staff turnover on either side. There are no surprise change orders attached to the final invoice.

What changes for the business
  • An environment that matches how the business actually operates.
  • Documentation the client owns, in plain English and engineering depth.
  • Lower annual run rate against a defensible architecture.
  • Defensible posture for insurance, audit, sale, or merger.
The useful first conversation

Tell us what is actually broken.

The first call is not a pitch. It is a senior engineer asking what is on fire, what is fragile, and what is being quietly ignored in your environment. From there we work out which of the three practices is relevant, in what order, and what an honest commercial position looks like.