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Latency Meaning

The time delay between a command being sent and the resulting action occurring. In trading, latency is the time it takes for an order to travel from a trader's computer to the exchange's matching engine.

Low latency is the holy grail for high-frequency traders (HFT), as being even a millisecond faster can mean the difference between profit and loss. High latency can lead to "slippage," where the price of an asset changes between the time you click "buy" and the time the order is actually executed.

In decentralized environments, latency is often determined by "block times"-the time it takes for a network to confirm a transaction. Developers work constantly to reduce latency through "co-location" (placing servers in the same data center as the exchange) and by optimizing code.

As the financial world moves toward "instant" settlement, reducing latency across global networks is a primary technical challenge for the next generation of fintech infrastructure.

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