When you send data over the internet, it does not arrive right away. Instead, there is a short delay between sending and receiving the data. This delay is called network latency. For most people, a small delay is not a problem. However, for businesses that move a lot of data every day, those delays can add up and affect performance.
Today, many companies use cloud services and connected systems. Because of this, network latency is becoming more important. High delays in data transmission can make applications slow, delay file transfers, and affect video calls. The good news is that connection responsiveness can be measured and improved. In this article, we explain what it is and how to reduce it.
What is network latency?
Network latency is the time it takes for data to travel from one place to another across a network. It is measured in milliseconds (ms). In general, the lower the number, the faster and more responsive the connection feels.
However, when network latency becomes too high, data takes longer to reach its destination. As a result, applications may run more slowly, cloud tools may feel less responsive, and tasks that need a fast and stable connection may not work as smoothly.
For businesses, this can lead to delayed file syncing, choppy video calls, and software that feels slow or behind. Therefore, keeping latency low is important for a smooth and reliable user experience.
How do you measure network latency?
The simplest way to check network latency is by running a ping test. A ping test sends a small piece of data from your device to a server and records how long it takes to get a reply back. That round-trip time is your latency number. You can run one from your computer’s command line by typing ping [server address], or use a free online tool like Speedtest by Ookla. For a fuller picture across different network paths, IT teams often use monitoring tools that track latency continuously over time. Checking it on a regular basis matters because latency can shift depending on traffic load, routing conditions, and time of day.
According to the FCC’s Measuring Broadband America report, latency alongside packet loss are key signs of how healthy a network is, with clear effects on services like VoIP, video calls, and other tools that need a fast, live connection.
How do you fix high latency?
You fix high network latency by pinning down where the delay is actually coming from and working on that specific spot. It might be a long routing path, a connection shared with too many other users, or equipment that is well past its prime. Here are the main areas worth looking at:
- Physical distance and routing path. Data gets where it needs to go faster when the route is shorter and more direct. A dedicated fiber connection cuts network latency without putting your traffic at the mercy of public internet paths you have no say over.
- Network congestion. When too much data tries to squeeze through the same path at once, things slow down quickly. Quality of Service (QoS) settings help by putting time-sensitive traffic, like video calls or financial transactions, at the front of the line.
- Outdated hardware. Old routers, switches, and cables hold your network back in ways that throwing more bandwidth at the problem will not fix. Swapping out aging equipment tends to bring network latency down more noticeably than most people expect.
- Connectivity provider quality. Shared internet paths carry delays that are hard to predict from one hour to the next. Moving to a dedicated or private fiber connection gives enterprise traffic a steadier, more reliable environment to run through.
- Server and data center placement. The more ground data has to cover, the more latency builds up along the way. Placing workloads closer to your users, or picking a provider with Points of Presence near your key locations, takes a good chunk of that distance out of the equation.
A note on building for the long run
Keeping network latency low is an ongoing effort, not a one-time fix. Traffic grows, teams expand, and what holds up well at one scale can start to crack at another. Steady monitoring and regular infrastructure reviews go a long way.
For organizations operating across Southeast Asia, the fiber infrastructure sitting underneath your network has a bigger say in your latency than most people give it credit for. ARNet Infra is a dark fiber and network infrastructure provider covering Malaysia, Indonesia, Singapore, and Thailand. Their services span dark fiber, long haul fiber, metro fiber, and last mile fiber, giving large enterprises a connected path from cross-country routes all the way to building-level delivery. You can take a look at their network coverage and learn more about what they do on their website.
With dark fiber, your traffic moves on a route that belongs entirely to your organization. No sharing, no congestion from other users, and no surprises when traffic peaks. For businesses across Southeast Asia where network latency can shift quite a bit depending on the connectivity tier, having that level of control at the physical layer is one of the more dependable ways to keep performance steady as your operations grow.
About the Author
Nabila Choirunnisa, Digital Marketing Executive at ARNet
