In general, liquidity is an asset's ability to get converted to cash without losing its fair price. In other terms, especially in Forex, liquidity refers to numbers of buyers and sellers in the market ready to trade at a time. When brokers do not want to take big risks on trades, they sell them to big brokers or liquidity providers. To do this, there is a bridge or connection required.
At Forex Web Development we provide end to end liquidity solutions to our brokers, where we provide technology to establish a connection between two brokers. Such connections include a bridge to execute a trade to liquidity provider server.