The Forex (foreign exchange) market is the largest and most liquid financial market in the world. It's where currencies are traded, with the goal of profiting from fluctuations in exchange rates. Participants include banks, financial institutions, corporations, governments, and individual traders. Major currency pairs like EUR/USD and USD/JPY are commonly traded. Forex trading occurs 24/5, and it's essential to understand factors like interest rates, geopolitical events, and economic data that influence currency movements. Trading can be risky and requires a good understanding of market analysis and risk management.