Edge to core: Fibre infrastructure and the retrofit challenge

Author: Joe Peck

AFL, a manufacturer of fibre optic cables and connectivity equipment, has published a new blog exploring how distributed AI workloads change fibre infrastructure requirements across edge, metro/regional, and core environments.

The blog also addresses a practical question for operators with facilities already in service: at what point does a brownfield retrofit stop making sense compared with a greenfield new build?

Industry forecasts suggest inference will overtake training as the dominant use of AI data centres by 2027, shifting demand towards regional and edge sites that can respond within 1–10ms. This means edge, regional, and core tiers can no longer be planned as separate projects, since every tier depends on shared fibre infrastructure.

The blog outlines what a fibre retrofit assessment should cover and explains how separating long-life backbone elements from short-life connectivity helps operators avoid designing for obsolescence.

You can read it in full here: Edge to Core: Fiber Infrastructure for Distributed AI Growth and the Retrofit Challenge

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This article is sponsored by AFL