A multi-monitor setup involves using two or more computer screens connected to a single computer system. This configuration allows users to expand their workspace, making it easier to multitask by displaying multiple applications or documents simultaneously. It is commonly used by professionals in fields like graphic design, programming, and finance, where increased screen real estate can enhance productivity. Setting up a multi-monitor system typically requires compatible hardware, such as a graphics card that supports multiple displays. Users can arrange their monitors in various configurations, such as side-by-side or stacked, depending on their preferences and available space. This setup can significantly improve workflow and efficiency.