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Why reducing dependency on satellite time matters

An AMS-IX Story

AMS-IX

AMS-IX

Accurate time quietly supports almost everything in today’s digital infrastructure. Yet much of the way we keep systems in sync relies fully on satellite-based sources such as GPS.

These systems provide precise timing signals, but they also introduce a dependency on external infrastructure.

That dependency has become more visible in recent years. GNSS signals travel long distances and are relatively weak by the time they reach Earth. This makes them sensitive to interference, whether accidental or deliberate.

We’re starting to see the real-world impact of this. Imagine a trading platform where timestamps drift by just a few microseconds, enough to affect transaction ordering and compliance. Or a mobile network where loss of synchronisation propagates within seconds, leading to degraded performance or dropped connections.

In financial markets, timing disruptions can affect transaction sequencing and regulatory compliance. In telecommunications, loss of synchronisation can lead to degraded performance or even outages. In some cases, interference events have affected multiple networks simultaneously.

Public NTP continues to provide a reliable and widely trusted service for most organisations. But as digital systems become more critical, the question is no longer just about accuracy; it’s about resilience. Not just to meet compliance requirements, but to ensure continuity, protect uptime, and maintain trust.

This is where Private NTP, as part of Time-as-a-Service (TaaS), becomes increasingly relevant. Not as a replacement for satellite-based timing, but as an additional, independent layer that strengthens overall resilience.

By sourcing time via fibre directly from VSL, AMS-IX provides a satellite-independent option that delivers highly accurate, traceable UTC, meaning time that can be linked back to an official, verifiable standard, to connected systems.

This enables organisations to:

  • reduce dependency on external timing sources
  • strengthen operational resilience
  • support compliance with regulations such as NIS2, MiFID II, and DORA

As digital infrastructure continues to evolve, time is becoming more visible as a foundation for trust and continuity.

Strengthening that foundation isn’t a reaction. It is a proactive step towards resilience. If you’re exploring how to strengthen your timing architecture, adding an independent time source can be a practical place to start.

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