Use case · Finance & fintech
Low-latency trading
Low-latency trading reacts to markets in microseconds, so latency dominates everything — physical proximity to the exchange, the network path, and the consistency of performance. It demands bare metal, tuned hardware, and low-latency networking, with jitter as the real enemy. Where it must sit inside a specific exchange, a colocated specialist may fit better.
Key points
- Low-latency trading reacts to markets in microseconds, so latency dominates every decision.
- Physical proximity to the exchange matters, because distance itself adds latency.
- Consistency matters as much as speed — jitter, the variation in latency, is the real enemy.
- It requires bare metal and tuned hardware; virtualisation overhead and jitter are unacceptable.
- For absolute lowest latency inside a specific exchange, a colocated specialist may fit better.
What does low-latency trading need?
Low-latency trading, including high-frequency trading, competes on speed: strategies react to market events and place orders in microseconds, and being faster than competitors can determine whether a trade is profitable. This makes latency — the time between an event and the trading system's response — the dominant concern, above almost everything else. A low-latency trading system is judged by how quickly and how consistently it can receive market data, decide, and act, with differences measured in microseconds mattering in a way that would be irrelevant to almost any other workload.
This singular focus on latency shapes every part of the infrastructure. The physical location of the trading system relative to the exchange, the network path its data travels, the hardware it runs on, and the consistency of that hardware's performance all bear directly on latency, so all of them matter. Low-latency trading infrastructure is therefore built around minimising and, crucially, stabilising latency — a different objective from the throughput or capacity that most workloads optimise for. Understanding it means understanding what adds latency and how each source is minimised, because in this domain the infrastructure exists to be fast and consistent above all.
Proximity to markets: why physical location matters
One of the largest and most unavoidable sources of latency is physical distance, because data travels no faster than physics allows, and the further a trading system is from the exchange, the longer its data takes to get there and back. Over the distances between cities, this delay is significant on the microsecond scale that low-latency trading cares about, so where a trading system sits relative to the exchange it trades on directly affects its latency. This is why physical location is a first-order concern in low-latency trading, not a detail.
The extreme response to this is colocation — placing trading systems physically at or immediately adjacent to the exchange, so the distance, and thus the latency, to the exchange's systems is as small as possible. For the most latency-sensitive strategies, being in the same facility as the exchange's matching engine is decisive, and specialised colocation at exchanges exists precisely for this. Less extreme strategies still benefit from being near the markets they trade, even if not in the exchange's own facility. The general principle is that proximity to the market reduces latency, so where the infrastructure is located, relative to the relevant exchange, is a defining factor in low-latency trading.
Network latency: the dominant technical factor
Beyond physical distance, the network path a trading system's data takes — through cabling, switches, and any intermediate hops — adds latency, and minimising this network latency is central to low-latency trading. Every element in the path adds some delay, so low-latency trading uses fast, direct, low-latency networking, with as few hops and as little processing in the path as possible, to shave microseconds from the round trip. Direct connectivity to the market, high-performance networking hardware, and carefully-designed network paths all serve to reduce the time data spends in transit.
This attention to the network extends to techniques that reduce the latency added within the trading system's own machines, such as networking approaches that bypass parts of the usual processing to deliver data to the trading application faster. The goal throughout is to minimise every source of delay between the market and the trading decision, and the network — both between systems and within them — is where much of that latency lives. Low-latency trading infrastructure therefore treats networking as critical, engineering the path and the hardware to be as fast and direct as possible, because network latency is among the largest technical factors the system can control.
Market data feeds and their latency
Low-latency trading depends on receiving market data quickly as much as on acting quickly, because a strategy can react no faster than it learns of the market events it responds to. Market data feeds — the streams of prices, quotes, and trades from the exchange — must be received and processed with minimal latency, since any delay in getting the data is delay in the whole decision. The handling of these feeds, from receiving them over the network to processing them into a form the strategy can act on, is therefore as latency-critical as the order path, and often where significant latency can be won or lost.
Minimising feed latency means fast, direct receipt of the data and efficient processing of it. The feed should arrive over a low-latency network path, be received by hardware and software tuned to handle it quickly, and be processed without unnecessary delay before the strategy sees it. Because the volume of market data can be high, this processing must also keep up under load, so that the system does not fall behind during busy periods — falling behind on the feed is itself a serious latency failure. Providing infrastructure for low-latency trading therefore means supporting fast feed handling as well as fast order placement, since both halves of the loop — learning of the market and responding to it — must be fast for the strategy to compete. The feed side is easy to underestimate and important to get right.
Deterministic performance: consistency over average
In low-latency trading, the consistency of latency matters as much as its average, because unpredictable variation — jitter — undermines strategies that depend on reliably fast response. A system that is usually fast but occasionally slow can fail at the crucial moment, and since trading decisions depend on latency being reliably low, the variation in latency is often a greater enemy than a slightly higher but consistent latency would be. Low-latency trading therefore seeks deterministic performance: latency that is consistently low, not merely low on average, with minimal jitter.
Achieving this consistency drives many of the choices in low-latency trading infrastructure. Sources of variability — anything that might occasionally introduce delay — are minimised, because determinism requires that the system behave the same way every time, without unpredictable slowdowns. This is why low-latency trading favours dedicated, tuned hardware over shared or virtualised infrastructure, which can introduce variability: the aim is a system whose latency is reliable to the microsecond, not merely low on average. Understanding this emphasis on determinism clarifies why low-latency trading infrastructure is built and tuned so carefully — consistency of performance is itself a primary requirement.
Why bare metal is essential
Low-latency trading requires bare metal — dedicated physical servers without a virtualisation layer — because virtualisation adds both overhead and, worse, variability that low-latency trading cannot tolerate. A virtualisation layer sits between the workload and the hardware, adding some latency and, critically, introducing unpredictability as the shared infrastructure and hypervisor affect timing. For a workload where microseconds and consistency are decisive, this overhead and jitter are unacceptable, so low-latency trading runs directly on dedicated hardware, with no virtualisation between the trading system and the machine.
Bare metal also allows the fine control and tuning that low-latency trading depends on. Running directly on dedicated hardware, a trading system can be tuned at a low level — pinning processes to specific cores, controlling how the hardware and operating system behave, eliminating sources of variability — in ways that shared, virtualised infrastructure does not permit. This combination of full, unmediated performance and deep control is why low-latency trading has always run on dedicated, tuned bare-metal systems. The case for bare metal here is as strong as for any workload: virtualisation's overhead and unpredictability are simply incompatible with the microsecond determinism low-latency trading demands.
Hardware and system tuning for latency
Low-latency trading uses hardware chosen and tuned specifically for low, consistent latency, which can differ from hardware chosen for raw throughput. Fast processors with strong per-core performance matter, since much of the latency-critical path runs on individual cores; the system is tuned to minimise anything that could introduce delay or variability; and low-latency networking hardware is used throughout. The whole system — processor, memory, networking, operating system, and application — is configured as a coherent low-latency environment, because latency accumulates across all of them and any weak point adds delay.
This tuning is a specialised discipline, aimed at squeezing out microseconds and, above all, eliminating variability. Configuring systems for deterministic low latency involves careful attention to how the hardware and software behave, removing sources of jitter and delay throughout. The result is a system quite different from a general-purpose server, tuned end to end for the singular goal of fast, consistent response. Providing infrastructure for low-latency trading therefore means providing capable hardware that is also suited to and configurable for this tuning, on dedicated machines the trader can tune to their strategy's needs. The hardware and its tuning together determine how low and how consistent the latency can be.
Sovereignty and European markets
For trading on European markets, hosting in Europe aligns both with the proximity that latency demands and with the regulation and sovereignty that financial activity carries. Trading European markets benefits from infrastructure near those markets, which means European hosting; and financial trading is subject to regulation, including requirements that can bear on where systems and data reside. So for European trading, EU-hosted infrastructure serves the latency need of proximity to European markets and the regulatory and sovereignty considerations of European financial activity together.
VV Internet Hosting is incorporated in the Netherlands, within the EU, so trading infrastructure hosted with us runs under European jurisdiction and outside the direct reach of the US CLOUD Act, on infrastructure located in Europe near European markets. For firms trading European markets to whom both proximity and European regulatory alignment matter, this European hosting serves both. The sovereignty of the infrastructure — under European law, in European datacenters — suits European financial activity, complementing the proximity to European markets that latency-sensitive trading of those markets requires.
Where VV Internet Hosting fits — and where it does not
This is a workload where we are careful to be honest about our limits, because low-latency trading has a demanding requirement we do not always meet: for the most latency-sensitive strategies, the trading system must be colocated inside or immediately adjacent to a specific exchange's facility, microseconds from its matching engine. That is the domain of specialised colocation at the exchange itself, and if your strategy depends on being physically in a particular exchange's cage, a specialist colocation provider at that venue is the right choice — not us, and we will tell you so plainly rather than pretend otherwise.
Where we fit is latency-sensitive trading that benefits from fast, tuned, dedicated infrastructure in Europe, near European markets, but does not require being physically inside a specific exchange. We provide bare-metal servers tuned for low, consistent latency, low-latency networking, and the dedicated control the workload needs, in EU datacenters under European jurisdiction — suited to trading strategies for which European proximity and dedicated, tuned bare metal suffice, and for which the absolute minimum colocated latency inside an exchange is not the deciding factor. For that, we are a strong fit. For strategies that must live in the exchange's own facility, we will point you to specialised colocation there. Being clear about this boundary matters more than winning work we are not the best home for.
Related use cases
Questions
Low-latency trading, answered plainly
Common questions about hosting for Low-latency trading.
Why does physical location matter so much for low-latency trading?
Because data travels no faster than physics allows, so the further a trading system is from the exchange, the longer its data takes to get there and back — a delay significant on the microsecond scale low-latency trading cares about. This is why colocation, placing systems physically at or near the exchange, is decisive for the most latency-sensitive strategies.
Why does low-latency trading need bare metal?
Virtualisation adds both overhead and, worse, variability: a layer between the workload and hardware introduces latency and unpredictable timing as shared infrastructure affects it. For a workload where microseconds and consistency are decisive, this is unacceptable. Bare metal runs directly on dedicated hardware and allows the low-level tuning — like pinning processes to cores — the workload depends on.
Can VV Internet Hosting host high-frequency trading?
It depends on the strategy. For latency-sensitive trading that benefits from fast, tuned, dedicated bare metal in Europe near European markets, yes. But for the most latency-sensitive strategies that must be colocated inside a specific exchange's facility, microseconds from its matching engine, a specialist colocation provider at that venue is the right choice — and we will say so rather than overpromise.
Planning Low-latency trading infrastructure?
We host dedicated, EU-sovereign infrastructure sized to your workload — and we will tell you plainly when something else fits better. Tell us what you're building.