Online foreign exchange occurs in real time. Exchange rates are constantly changing, in intervals of seconds. Thus, an online Forex system operates in real time. That means that quotes are accurate for the very moment they are displayed, and in 10 seconds or less, a different rate may be quoted. Also, when a user locks in a rate and executes a transaction, that transaction is immediately processed and the exchange/trade has been executed.
As exchange rates change so rapidly, any Forex software must display the most up-to-date rates to the user. That means that Forex software is continuously communicating with a remote server that provides the current updated exchange rates. The rates that are quoted on Forex software, unlike traditional bank exchange rates, are real, tradable rates. A user may choose to "lock in" and trade at the rate which is currently displayed, (called the freeze rate), which is valid as long as it is displayed. A different rate may be displayed within a few seconds.
As soon as a transaction is executed, the relevant data is processed securely and sent to the data server where it is stored. A backup is created in a different server farm to ensure data integrity and continuity. All of this happens in real time, with no human intervention.
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