Before, the forex market was limited only to long-term investors, banks and people who have greater capitals. The trading occurs via an agent or voice broker who will inform clients on what is going on. Later on, it was been replaced by a computerized automated systems. This was the early form of forex trading strategy.
The trader which is either home-based or office-based or retail investor can possibly trade on real time with different banks with an aid of a broker. The broker then uses the computerized platforms of trading. It contains traders on live desks which places the trades on the broker