There are three main business models used by Forex brokers which differ by the way the transactions are handled and orders are executed: ECN, STP and Market Makers.ĮCN: ECN stands for 'Electronic Communication Network' which is simply a technical term that is used to describe how banks and liquidity providers connect to each other to form a bid and offer price. The difficult part in understanding ECN and STP meanings is that those have been interpreted differently by many people. This is one of the most frequently asked questions.