Migrating the Lifeblood of the Nation: Why Network Transformation Is Not an IT Project
6/8/20262 min read
Understanding Network Migration in Critical National Infrastructure
In discussions surrounding network migration, attention frequently gravitates towards technological advancements such as transitioning from MPLS to SD-WAN, upgrading hardware, and enhancing cloud connectivity. While these considerations are important, in the realm of Critical National Infrastructure (CNI) and vital public services, the primary concern shifts from technology to ensuring uninterrupted business continuity. Existing network infrastructures, often outdated, continue to support essential services across the UK. However, the evolution of bandwidth requirements, the integration of cloud services, remote operations, and increasing cyber threats necessitate an urgent transition to next-generation network services.
The True Challenge of Network Migration
A common misconception about network migration is viewing it solely as a technical implementation. In reality, such a perspective overlooks the significant operational risks involved. Each network acts as the nervous system connecting various elements such as people, operational technology, applications, suppliers, and customers. The achievement of desired business outcomes is contingent upon the successful management of these connections. Therefore, instead of framing the question as, 'How quickly can we migrate?' it is essential to shift focus to, 'How can we migrate without disrupting the services that society relies upon?'
Core Principles for Successful Migration
Organisations that excel in managing network migrations typically adhere to five core principles:
Comprehend the service, not merely the circuit:
Understand which business and operational services hinge on specific connections, recognising that many dependencies remain undocumented in extensive legacy networks.
Plan for coexistence:
A complete overnight transition is seldom feasible. Rather, legacy systems must often coexist with next-generation services for an extended period. Thus, the architecture for the transition holds significant importance.
Consider migration as a business change initiative:
This is not solely a technology project; engagement from operations, security, suppliers, service management, and business stakeholders is crucial for a synchronized migration strategy.
Ensure operational readiness early:
New networks require a fresh approach to monitoring, support models, processes, and skills. Launching technical deployments without sufficient operational readiness only pushes risks into live services.
Emphasise outcomes, not technology:
The goal transcends mere replacement of MPLS; the focus should be on enhancing resilience, agility, security, and overall service performance.
As governments, utilities, defense organisations, and public services seek to improve their connectivity, the urgency of these migration challenges intensifies. Organisations that recognise migration as a comprehensive transformation, rather than a simple network update, will be better equipped to navigate the complexities involved.