KubeCon London April 2025

Platform Perseverance: 1,000 Kubernetes Clusters

The talk described how a team of three platform engineers navigated regulatory requirements, operational constraints and rigorous change management processes in order to operate 1,000 Kubernetes clusters for a Swiss private bank.

Their approach combined CNCF components, custom operators and an in-house managed Kubernetes service. A notable outcome was the capacity to update the entirefleet within a two‑day window.

The session covered the entire journey, focusing on the practical lessons in terms of reliability, risk control and stakeholder adoption. It examined the progression from an initially overwhelming scope to system-wide automation, highlighting how disciplined processes and tools helped convert pressure into sustained productivity.

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