Safer, faster change for a national public Wi-Fi platform

UK public Wi-Fi provider

Key figures

  • Daily release cadence
  • 20+ virtual machines in a full replica of the live estate
  • Millions of concurrent users on AAA accounting

The challenge

We took on a live production estate built by others, where every change had to be made safely. Shared test environments were a bottleneck, and the whole estate needed encryption at rest.

What we did

  • Virtualised the core Wi-Fi platform into a private cloud on VMware vSphere.
  • Built a full replica of the live estate, more than 20 virtual machines, that a single trigger stands up.
  • Ran AAA accounting on FreeRADIUS, and set up a Docker registry and Kubernetes deployments.
  • Tested Chef cookbooks automatically in virtual environments, and introduced DevOps processes.
  • Rolled out encryption at rest across the whole estate, alongside wider security remediation.

The result

Releases reached a daily cadence. Cookbook development and pull-request review took less time, and the platform ran AAA accounting for millions of concurrent users with encryption at rest throughout.

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