Forex is a portmanteau of a foreign currency (money) and learning.unisg.ch exchange of them in a platform. Foreign exchange is the process of exchanging one currency into another currency for a variety of reasons, usually for commerce and business, trading, or tourism. Due to a recent triennial studies from the Bank for International Settlements, the average amount is more than $5.1 trillion in daily forex trading volume. The foreign exchange market is where currencies are traded.