Building the Architectural Blueprint for a National Fibre Broadband Rollout

Deploying next-generation fibre broadband across millions of UK homes requires more than network infrastructure — it requires an IT architecture capable of supporting entirely new product types, provisioning flows, and customer journeys. SAVI3 provided that architecture for one of the UK’s largest telecoms operators.

The challenge

Our client was undertaking one of the most significant network transformations in UK broadband history, rolling out full-fibre (FTTP), part-fibre (FTTC), and ultrafast (SOGEA) connectivity at national scale across millions of homes in partnership with wholesale network providers. The network change was well-understood. The IT change was not.

Legacy OSS/BSS systems, built for copper-era product structures, were not equipped to support three entirely new product types. New wholesale interfaces, provisioning models, product definitions, and customer order flows all needed architectural clarity before a single line of integration code could be written.

What we did

SAVI3 designed the IT blueprint and end-to-end solution architecture for the fibre transformation programme, covering the full Order-to-Activation process. Applying TOGAF enterprise architecture methodology, we defined the integration architecture across 20+ network management, billing, CRM, and provisioning systems — establishing the design principles and interface standards that governed programme delivery across a complex, multi-vendor environment.

The results

The operator now delivers fibre broadband services across millions of UK homes, built on the OSS/BSS architecture we designed. Three new product types (FTTP, FTTC, SOGEA) were delivered to market within the programme window — establishing the operator as one of the UK’s leading gigabit broadband providers, a position on which an £11 billion ongoing infrastructure commitment continues to build.

This engagement illustrates what SAVI3 delivers to telecoms operators mid-transformation: not frameworks or recommendations, but the architectural decisions and integration designs that production delivery depends on.