Market Logic is a new modular trading platform. Its modularity makes it stand out comparing to platform ProTrader 3 of previous generation. Major changes affected the server side implemented using entirely new back-office, which can be integrated with any billing and CRM systems. New trading core can operate in two modes: the stock exchange mode and ECN mode. Combination of these modes allows us to offer our customers flexible and high quality service. New models provide an effective margin risk protection, at the same time allowing users with small deposits to trade large volumes. New platform supports a variety of commissions, account types, conversion models of obtained profit and other features which make Market Logic platform to be an effective tool for internet trading.