As the name implies, an expert advisor (EA) is a piece of software that makes trading decisions on your behalf. After installing Forex EA on a trading platform, the expert advisor or trading robot will manage your trades based on some predetermined criteria. These criteria are some form of programmed algorithms based on your specified trading strategies.

After you've identified your trading strategy, you can translate them into algorithms and develop a trading robot that will be executing trades on your behalf, instead of having to keep yourself glued to a computer screen.